Nghiên cứu thành phần loài của liên họ bọ xít nước corixoidea insecta heteroptera tại việt nam

ĐẠI HỌC QUỐC GIA HÀ NỘI TRƯỜNG ĐẠI HỌC KHOA HỌC TỰ NHIÊN Hà Tuyết Ngân NGHIÊN CỨU THÀNH PHẦN LỒI CỦA LIÊN HỌ BỌ XÍT NƯỚC CORIXOIDEA (INSECTA: HETEROPTERA) TẠI VIỆT NAM THE STUDY ON THE WATER BUG FAUNA OF THE SUPERFAMILY CORIXOIDEA (INSECTA: HETEROPTERA) IN VIETNAM LUẬN VĂN THẠC SĨ KHOA HỌC Hà Nội - 2020 ĐẠI HỌC QUỐC GIA HÀ NỘI TRƯỜNG ĐẠI HỌC KHOA HỌC TỰ NHIÊN Hà Tuyết Ngân NGHIÊN CỨU THÀNH PHẦN LOÀI CỦA LIÊN HỌ BỌ XÍT NƯỚC CORIXOIDEA (INSECTA: HETEROPTERA) TẠI VIỆT NAM THE STUDY ON THE WATER BUG FAUNA OF THE SUPERFAMILY CORIXOIDEA (INSECTA: HETEROPTERA) IN VIETNAM Chuyên ngành: Động vật học Mã số: 8420101.03 LUẬN VĂN THẠC SĨ KHOA HỌC NGƯỜI HƯỚNG DẪN KHOA HỌC: PGS.TS Trần Anh Đức XÁC NHẬN HỌC VIÊN ĐÃ CHỈNH SỬA THEO QUYẾT NGHỊ CỦA HỘI ĐỒNG CHẤM LUẬN VĂN THẠC SĨ Chủ tịch hội đồng chấm luận văn thạc sĩ khoa học Giáo viên hướng dẫn PGS.TS Nguyễn Văn Vịnh PGS.TS Trần Anh Đức ACKNOWLEDGEMENTS I would like to express my sincere gratitude to my thesis supervisor, Assoc Prof Trần Anh Đức He consistently allowed this thesis project to be my own work, but steered me in the right the direction whenever he thought I needed it I have also received many valuable advices from him Besides, I would also like to thank all staff and students in Department of Applied Zoology Without their passionate participation and comments, this thesis could not have been completed I express my deep sense of gratitude to to Assoc Prof Nguyễn Lai Thành for granting access to high magnification microscopic equipment in his laboratory at Center for Life Science Research, Dr Nguyễn Thanh Sơn for guiding me the techniques of photographing habitus of small-sized insects like Micronectidae My sincere thanks also extend to Assoc Prof Nguyễn Văn Vịnh for facilitating some field trips and Dr Hwang Wei Song (Lee Kong Chian Natural History Museum, National University of Singapore) for the loan of micronectid specimens I am extremely grateful to the Nagao Natural Environment Foundation Scholarship for funding my MSc study and field trip I acknowledge with thanks the kind of patronage and enthusiastic, considerate support, which I have received from Mr Bùi Văn Hoàng when I was in field trip to southern Vietnam Last but not least, I must express my very profound gratitude to my family and friends who always support and encouraged me throughout this long journey of learning This study is supported by the Vietnam Ministry of Science and Technology, under project number ĐTĐL.CN-65/19 Hanoi, December 2020 Hà Tuyết Ngân TABLE OF CONTENTS INTRODUCTION Chapter LITERATUTE REVIEW 1.1 An overview of taxonomical research on the superfamily Corixoidea in Asia .7 1.2 An overview of taxonomical research on the superfamily Corixoidea in Vietnam .8 1.3 Some information about natural conditions of Vietnam Chapter MATERIALS AND METHODS 11 2.1 Materials 11 2.2 Methods 13 2.2.1 Collecting and preservation methods 13 2.2.2 Preparation of microscopic slide 13 2.2.3 Identification of specimens .13 2.2.4 Habitus and illustrations of morphological characters 14 Chapter RESULTS AND DISCUSSION 16 3.1 Classification and key to current subgenera of Micronecta 16 3.2 Species composition of the superfamily Corixoidea in Vietnam .25 3.3 Diagnostic features of species of Micronectidae occurring in Vietnam 33 3.3.1 Diagnoses of species of Micronectidae 33 3.3.2 Key to currently known species of Micronecta in Vietnam 79 3.4 Diagnostic features of species of Corixidae occurring in Vietnam 86 CONCLUSIONS 92 REFERENCES 93 APPENDIX 100 Material examined 101 LIST OF FIGURES Figure 1: Geographic (A) and climatic (B) regions of mainland Vietnam 10 Figure 2: Schematic map of sampling areas of Corixoidea in Vietnam .12 Figure 3: Morphological structures for the identification of Corixoidea (reproduced from Chen et al., 2015: Figs 6, 7, 8, 10) 15 Fig Habitus photos of species of Micronecta Kirkaldy, 1897b .36 Fig Morphological features of Micronecta species, ♂♂ .37 Fig Morphological features of Micronecta species, ♂♂ .40 Fig Morphological features of Micronecta species, ♂♂ .42 Fig Habitus photos of species of Micronecta Kirkaldy, 1897b, ♂♂ .43 Fig Morphological features of Micronecta species, ♂♂ .46 Fig 10 Morphological features of Micronecta species, ♂♂ .48 Fig 11 Morphological features of Micronecta spA.n., ♂ 49 Fig 12 Morphological features of Micronecta species, ♂♂ .51 Fig 13 Morphological features of Micronecta spF.n., ♂ 53 Fig 14 Morphological features of Micronecta spK.n., ♂ 54 Fig 15 Morphological features of Micronecta spB.n., ♂ 55 Fig 16 Habitus photos of species of Micronecta Kirkaldy, 1897b, ♂♂ 56 Fig 17 Morphological features of Micronecta species., ♂♂ 58 Fig 18 Morphological features of Micronecta spC.n., ♂ 60 Fig 19 Morphological features of Micronecta spH.n., ♂ 61 Fig 20 Morphological features of Micronecta spG.n., ♂ 62 Fig 21 Morphological features of Micronecta spD.n., ♂ 64 Fig 22 Morphological features of Micronecta spE.n., ♂ 65 Fig 23 Morphological features of Micronecta haliploides Horváth, 1904, ♂ 67 Fig 24 Habitus photos of species of Micronecta Kirkaldy, 1897b and Synaptonecta Lundblad, 1933b, ♂♂ 70 Fig 25 Morphological features of Micronecta species, ♂♂ .71 Fig 26 Morphological features of Micronecta species, ♂♂ .73 Fig 27 Morphological features of Micronecta spI.n., ♂ 75 Fig 28 Morphological features of Micronecta species, ♂♂ .77 Fig 29 Morphological features of Synaptonecta issa (Distant, 1910), ♂ 79 Fig 30 Habitus photos of species of Agraptocorixa Kirkaldy, 1898 and Sigara Fabricus, 1775, ♂♂ 88 Fig 31 Morphological features of Sigara septemlineata Paiva, 1918, ♂ 89 Sigara sp.1 90 Fig 32 Morphological features of Sigara sp.1, ♂ .91 A Fore leg B Strigil C Right paramere D Left paramere .91 LIST OF TABLES Table 1: List of Corixoidea species currently known in Vietnam 26 ABBREVIATIONS a.s.l = above sea level Fig = Figure leg.= legit (collector) National Park = N.P NHMW = Natural History Museum, Vienna, Austria Prov = Province ZRC = Zoological Reference Collection, Lee Kong Chian Natural History Museum, National University of Singapore, Singapore ZVNU = Zoological Collection of Biological Museum, VNU University of Science, Hanoi, Vietnam INTRODUCTION Water bugs of the superfamily Corixoidea (infraorder Nepomorpha) have some significant ecological roles and economic importance Species of Corixidae are known to be important part in the diet of insectivorous fishes, amphibians, and birds Corixidae and Micronectidae are also a part of the freshwater macroinvertebrate assemblage which is used as biological indicators [48] The superfamily Corixoidea consists of three families, Corixidae, Micronectidae, and Diaprepocoridae Diaprepocoridae only occurs in Australia and New Zealand Corixidae widely distribute in temperate regions and Micronectidae is commonly found in tropical Asia [4] In Southeast Asia, species of Micronectidae are more commonly than those of Corixidae Due to many structural similarities with Corixidae, Micronectinae was originally established as a subfamily of Corixidae by Jaczewski (1924) and followed by most subsequent entomologists [23] Nieser (2002b) pointed out key characters to support the distinction between Corixidae and Micronectidae, and this classification has been largely accepted in subsequent studies (e.g., Tinerella 2008, 2013; Chen et al 2015) [8, 42, 56, 57] Regarding the genus Micronecta, there have been several subgenera established under this genus [8, 21, 46, 59, 62] However, literature on this topic has been rather scattered and diagnostic features of each subgenus were not well-defined, making it difficult to interpret for subsequent workers There is a need to re-evaluate subgeneric classification of Micronecta The fauna of Micronectidae in Vietnam was mostly studied by Wróblewski during 1962–1972, and his works are still the most complete research on this family up to now He reported and described 16 species from Vietnam (mostly in northern area [59, 62] Nieser (2000) described one more new species for Vietnam, M polhemusi [40] Thus, prior to the present study, Wróblewski (1962, 1967, 1972a) and Nieser (2000) recorded a total of 17 micronectid species from Vietnam [59, 62, 65] Jaczewski (1962) reported Agraptocorixa hyalinipennis and four species of genus Sigara on the family Corixidae from Vietnam [24] In general, the knowledge of Corixoidea in Vietnam is rather sparse and scattered in some literature about aquatic bug fauna, thus needs to be investigated further Considering the points highlighted above, the study in this thesis, titled “The study on the water bug fauna of the superfamily Corixoidea (Insecta: Heteroptera) in Vietnam” has been carried out with the following objectives: - To re-evaluate the classification of current subgenera of Micronecta - To investigate the species composition of Micronectidae and Corixidae (superfamily Corixoidea) in Vietnam - To study diagnostic features of corixoid species and to construct a key to species of the genus Micronecta in Vietnam Chapter LITERATUTE REVIEW 1.1 An overview of taxonomical research on the superfamily Corixoidea in Asia In Southeast Asia, the superfamily Corixoidea are represented by two families, Corixidae (water boatmen) and Micronectidae (pygmy water boatmen) Micronectidae was formerly recognized as a subfamily of Corixidae due to their morphological similarities, e.g., triangular rostrum, spoon-shaped pala, middle tarsi with very long claws, etc Although these two families look very similar, they clearly differ in several characteristics The distinct characteristics of pygmy water boatmen are the small size (1.0–5.0 mm), the exposed scutellum In contrast to Micronectidae, members of Corixidae are small to medium- sized (3-15 mm) with the scutellum hidden under pronotum [55] Corixidae have the largest number of species of the Nepomorpha families divided into four subfamilies, 450 species within 32 genera Corixidae is an exceptional family as they are most richly represented in temperate regions whereas other Nepomorphan families are richest in tropical areas [4] They are also the only one that are omnivores while all aquatic bugs are predaceous In Singapore, there have been reports of only one species, Agraptacorixa hyalinipennis, while in Peninsular Malaysia, only Sigara paivai has been found [55] Unlike Corixidae, the family Micronectidae, especially the genus Micronecta, are speciose in tropical Asia [55] However, due to their tiny size and unresolved classification, the micronectid fauna remains poorly studied, and is still big gap of knowledge In Southeast Asia, there occur only two genera of Micronectidae, Micronecta Kirkaldy, 1897b and Synaptonecta Lundblad, 1933b They are closely related, but there are significant structural differences between the two genera, as summarised by Wróblewski (1972a), Nieser (2002b), and Chen et al (2005) Wróblewski (1968) provided a checklist to Oriental species, with distribution data of 43 micronectid species [63] Nieser (2000) provided a key to 24 species of Micronectidae from Southeast Asia, but his study emphasised on the TAD1126; ZVNU • ♂♂, ♀; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 17 Dec 2011; Ngo Q.H & Tran A.D leg.; TAD1127; ZVNU • ♂♂, ♀♀; Ba Vi N.P., Minh Quang, Cai stream, 65m a.s.l.; 26 Apr 2012; Ngo Q.H et al leg.; TAD1207; ZVNU • ♂; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 27 Apr 2012; Ngo Q.H & Tran A.D leg.; TAD1208; ZVNU – Vinh Phuc Prov • ♂♂, ♀; Tam Dao N.P., Suoi Mo (upstream of Thac Bac waterfall); 16 Jun 2003; Tran A.D leg.; TAD0350; ZRC • ♂♂, ♀♀; Tam Dao N.P., Suoi Mo; & 15 Jul 2019; Tran A.D leg.; ZVNU – Quang Binh Prov • ♀♀; Phong Nha, Chay stream; 17 Jul 2004; Tran A.D leg.; DY0410; ZRC – Quang Nam Prov • ♂, ♀♀; Duy Xuyen district, My Son temple complex; 15°45.439‟N, 108°07.577‟E; Aug 2016; Chu T.D leg.; MS1614; ZVNU • ♀; Duy Xuyen district, My Son temple complex; 15°45.482‟N, 108°07.606‟E; Apr 2017; Chu T.D leg.; MS1715; ZVNU – Lam Dong Prov • ♂♂, ♀♀; Bao Loc, Damb‟ri waterfall; 19 May 2003; Tran A.D leg.; TAD0326; ZRC Micronecta (Micronecta) erythra Nieser, Chen & Yang, 2005 Phu Tho Prov • ♂♂ (brachypterous); Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56.927‟E; 08 May 2016; Nguyen T.S leg.; TS1617; ZVNU Micronecta (Micronecta) spA.n Lao Cai Prov • ♂♂, ♀♀; same locality data as holotype; ZVNU, NHMW • ♂♂; Sa Pa, Nam Cang, Nam Cang stream; 23 Oct 2012; Dinh N.H et al leg.; DNH12.08; ZVNU, ZRC • ♀; Sa Pa, waterfall by roadside from Nui Xe to Sa Pa town, ca 13km from Sa Pa; 25 Oct 2013; Tran A.D et al leg.; TAD1358b; ZVNU • ♀; Sa Pa, Thanh Phú, Nậm Cang stream; 26 Oct 2013; Tran A.D et al leg.; TAD1359; ZVNU • ♀; Sa Pa, Cat Cat, Ho stream (feeder stream of Muong Hoa stream); 27 Oct 2013; Tran A.D et al leg.; TAD1366; ZVNU – Ha Giang Prov • ♂; Vi Xuyen, Xin Chai commune, Da stream by the road from Thanh Thuy to Lao Chai; 09 May 2014; Tran A.D et al leg.; TAD1405; ZVNU • ♂, ♀; Xin Man, Nam Dan commune, Thac Tien - Deo Gio, stream 100m below water fall; 11 May 2014; Tran A.D et al leg.; TAD1413; ZVNU – Cao Bang Prov • ♀♀; Quang Uyen, road 207, Doc Lap commune, stream #2; 18 Dec 2013; Tran A.D et al leg.; TAD1374; ZVNU Micronecta (Micronecta) anatolica Lindberg, 1922 Lao Cai Prov • 11 ♂♂, ♀♀; Sa Pa, Ban Ho, Nam Pu stream (feeder stream of Muong Hoa stream), site 1, at lower section; 26 Oct 2013; Tran A.D et al leg.; TAD 1361; ZVNU • 36 ♂♂, 31 ♀♀; Sapa, Thanh Phu, near junction of Nam Cang and Muong Hoa streams, Ngo Q.H leg, 26 Oct 2013, TAD1360; ZVNU Micronecta (Micronecta) spJ.n Ha Giang Prov • ♂♂, ♀; same locality data as holotype; ZVNU – Lang Son Prov • ♂; Loc Binh, Mau Son, Khuoi Tang stream, 590 m a.s.l.; 06 Nov 2020; Tran A.D et al leg.; TAD20-34; ZVNU – Phu Tho Prov • ♂, ♀♀; Xuan Son N.P., Ban Cai, Cai stream, site 3, by the road to Tan Son; 07 Jun 2013; Tran A.D et al leg.; TAD1339; ZVNU • ♂♂, ♀♀; Xuan San N.P., Kim Thuong, Ha Bang stream; 28 Aug 2013; Tran A.D et al leg.; TAD1344; ZVNU • ♀; Xuan Son N.P., Ban Coi, Coi stream, site 1, water from underground; 29 Aug 2013; Tran A.D et al leg.; TAD1349; ZVNU • ♂, ♀♀; Xuan Son N.P., Tan Ong stream, 4km from Chin Tang waterfall; 21°04.288‟N 104°57.271‟E; 26 Aug 2014; Nguyen T.S leg.; TS1405; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Xoan stream, near the Tjunction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 27 Aug 2014; Nguyen T.S leg.; TS1407; ZVNU • ♂, ♀; Xuan Son N.P., Than stream, site 3; 21°11.393‟N, 104°52.625‟E; 27 Aug 2015; Nguyen T.S leg.; TS8516; ZVNU • 13 ♂♂, ♀♀; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 28 Aug 2015; Nguyen T.S leg.; TS1415; NHMW • 10 ♂♂, 14 ♀♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 25 May 2015; Nguyen T.S leg.; TS1510; ZRC • ♂♂, ♀♀; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 24 May 2015; Nguyen T.S leg.; TS1515; ZVNU • ♂♂; Xuan Son N.P., Xoan stream, near Lang village; 21°5,453‟N, 104°56,122‟E; 21 May 2015; Nguyen T.S leg.; TS1501; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Xoan stream, near Lang village; 21°5.453‟N, 104°56.122‟E; May 2016; Nguyen T.S leg.; TS1601; ZVNU • ♂♂; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 08 May 2016; Nguyen T.S leg.; TS1615; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Than stream, site 3; 21°11.393‟N, 104°52.625‟E; May 2016; Nguyen T.S leg.; TS1616; ZVNU • ♂; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 22 May 2015; Nguyen T.S leg.; TS1507 ZVNU • ♂♂, ♀♀; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 05 May 2015; Nguyen T.S leg.; TS1607; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 23 May 2015; Nguyen T.S leg.; TS1509; ZVNU • ♂♂; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 07 May 2016; Nguyen T.S leg.; TS1609; ZVNU • ♂; Xuan Son N.P., Tan Ong stream, 4km from Chin Tang waterfall; 21°04.288‟N, 104°57.271‟E; 22 May 2015; Nguyen T.S leg.; TS1505; ZVNU • ♂ ♀; Xuan Son N.P., Ha Bang stream, near the T-junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; 22 May 2015; Nguyen T.S leg.; TS1506; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Ha Bang stream, near the T- junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; 06 May 2016; Nguyen T.S leg.; TS1606ĐT; ZVNU • ♂, ♀♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 07 May 2016; Nguyen T.S leg.; TS1610; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56,927‟E; 08 May 2016; Nguyen T.S leg.; TS1617; ZVNU • ♂, ♀♀; Xuan Son N.P., Coi stream, site 2, near concrete bridge; 21°09.130‟N, 104°56.761‟E; 24 May 2015; Nguyen T.S leg.; TS1518; ZVNU • ♂, ♀♀; Xuan Son N.P., Lap stream, the second concrete bridge from Ngoc waterfall; 21°08.322‟N, 104°56.256‟E; 28 Aug 2014; Nguyen T.S leg.; TS1413; ZVNU – Hanoi • ♂♂, ♀♀; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 27 Apr 2012; Ngo Q.H & Tran A.D leg.; TAD1208; ZVNU – Hoa Binh Prov • 12 ♂♂, 30 ♀♀; Lac Son, Tu Do commune, Mu waterfall and down stream; 27 Aug 2020; Tran A.D., Le P.L & Nguyen T.C leg.; TAD20-02; ZVNU Micronecta (Micronecta) spF.n Thanh Hoa Prov • 10 ♂♂, ♀♀; same locality data as holotype; ZVNU, NHMW – Ha Giang Prov • ♂♂; Bac Quang, km 13 road 177, Tan Lap commune, waterfall & stream, ca 86km to Coc Pai town; 10 May 2014; Tran A.D et al leg.; TAD1410; ZRC – Cao Bang Prov • ♀♀; Bao Lac, Hung Dao commune, Nhi Ao river, near Nam Xui bridge; 20 Dec 2013; Tran A.D et al leg.; TAD1380; ZVNU – Nghe An Prov • ♂, ♀♀; Pu Mat N.P., Khe Kem waterfall & stream, site #1; 18 Apr 2013; Tran A.D et al leg.; TAD1310; ZVNU Micronecta (Micronecta) spK.n Dong Nai Prov • ♂♂, ♀♀; same locality data as holotype; ZVNU • ♂, ♀♀; Vinh Cuu, Ma Da stream, near Rang Rang forest station (near bridge); 09 Apr 2009; Tran A.D leg.; TAD0902; ZRC • ♂♂, ♀♀; Vinh Cuu, Ma Da, Suoi Sai (Sai stream), near bridge; 11 Apr 2009; Tran A.D leg.; TAD0907; NHMW • ♂; Vinh Cuu, Vinh An, Rang stream; 20 Apr 2009; Tran A.D leg.; TAD0913; ZVNU • ♀♀; Cat Tien N.P., Sa Mach stream, near Sa Mach forest ranger station; 20 Apr 2009; Tran A.D leg.; TAD0914; ZVNU Micronecta (Micronecta) spB.n Hanoi • 19 ♂♂, 11 ♀♀; same locality data as holotype; ZVNU, NHMW • ♀; Ba Vi N.P., Khanh Thuong, Mit stream, forest area, 80m a.s.l.; 17 Dec 2011; Ngo Q.H et al leg.; TAD1124; ZVNU • ♂, ♀; Ba Vi N.P., Minh Quang, Cai stream, 65m a.s.l.; 17 Dec 2011; Ngo Q.H et al leg.; TAD1126; ZVNU • ♂♂, ♀♀; Ba Vi N.P., Minh Quang, stream near by Tan Vien Pagoda, 340m a.s.l.; 26 Apr 2012; Ngo Q.H et al leg.; TAD1206; ZVNU • ♀; Ba Vi N.P., Minh Quang, Cai stream, 65m a.s.l.; 26 Apr 2012; Ngo Q.H et al leg.; TAD1207; ZVNU • ♂♂, ♀♀; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 27 Apr 2012; Ngo Q.H & Tran A.D leg.; TAD1208; ZRC • ♂♂; Ba Vi N.P., Yen Bai, Mo stream, ca 114m a.s.l.; 28 Apr 2012; Ngo Q.H & Tran A.D leg.; TAD1211; ZVNU – Lao Cai Prov • ♀; Sa Pa, Nam Sai, Seo Nam Sai stream 1; 24 Oct 2012; Dinh N.H et al leg.; DNH12.09; ZVNU • ♂; Sa Pa, Nam Sai, Seo Nam Sai stream 2; 24 Oct 2012; Dinh N.H et al leg.; DNH12.10; ZVNU • ♂; Sa Pa, Thanh Phu, Nam Cang stream; 26 Oct 2013; Tran A.D et al leg.; TAD1359; ZVNU – Cao Bang Prov • ♂; Ha Quang, road 203, Truong Ha commune, stream near Kim Dong tomb; 17 Dec 2013; Tran A.D et al leg.; TAD1371; ZVNU • ♀♀; Phia Oac – Phia Den N.P., road to Quang Thanh commune, Na Leng stream; 29 Oct 2020; Nguyen V.V et al leg.; PO20-06; ZVNU • ♂, ♀♀; Phia Oac – Phia Den N.P., road to Quang Thanh commune, Khue Lan stream; 29 Oct 2020; Nguyen V.V et al leg.; PO20-07; ZVNU – Lang Son Prov • ♂, ♀♀; Loc Binh, Mau Son, Khuoi Tang stream, 590 m a.s.l.; 06 Nov 2020; Tran A.D et al leg.; TAD2034; ZVNU • 12 ♂♂, ♀♀; Loc Binh, Mau Son, Long Dau stream, 300 m a.s.l.; 07 Nov 2020; Tran A.D et al leg.; TAD20-36; ZVNU – Phu Tho Prov • ♂♂, ♀♀; Xuan Son N.P., Ban Coi, Coi stream, site 2, near bridge; 07 Jun 2013; Tran A.D et al leg.; TAD1338; ZVNU • ♂, ♀♀; Xuan Son N.P., Kim Thuong, Xoan stream; 28 Aug 2013; Tran A.D et al leg.; TAD1343; ZVNU • ♀♀; Xuan Son N.P., Ban Coi, Coi stream, site 1, water from underground; 29 Aug 2013; Tran A.D et al leg.; TAD1349; ZVNU • ♀; Xuan Son N.P., Ban Coi, Coi stream, site 3, by the road to Tan Son; 29 Aug 2013; Tran A.D et al leg.; TAD1351; ZVNU • ♂, ♀♀; Xuan Son N.P., stream flows through the road, near Lang village; 21°5.662‟N, 104°56.236‟E; 26 Aug 2014; Nguyen T.S leg.; TS1402; ZVNU • ♂, ♀; Xuan Son N.P., stream flows through the road, near Lang village; 21°5.662‟N, 104°56.236‟E; 21 May 2015; Nguyen T.S leg.; TS1502; ZVNU • ♂♂, ♀♀; Xuan Son N.P., stream flows through the road, near Lang village; 21°5.662‟N, 104°56.236‟E; 24 Aug 2015; Nguyen T.S leg.; TS8502; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 28 Aug 2014; Nguyen T.S leg.; TS1415; ZVNU • ♂♂, ♀; Xuan Son N.P., Than stream, site 3; 21°11.393‟N, 104°52.625‟E; 28 Aug 2014; Nguyen T.S leg.; TS1416; ZVNU • ♂; Xoan stream, near Lang village; 21°5.453‟N, 104°56.122‟E; 21 May 2015; Nguyen T.S leg.; TS1501; ZVNU • ♂♂, ♀; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 22 May 2015; Nguyen T.S leg.; TS1507; ZVNU • ♀♀; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E, Nguyen T.S leg.; 06 May 2016, TS1607; ZVNU • ♂, ♀♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 25 May 2015; Nguyen T.S leg.; TS1510; ZVNU • ♂♂; Xuan Son N.P., Lap stream, near Ngoc waterfall; 21°08.311‟N, 104°56.202‟E; 23 May 2015; Nguyen T.S leg.; TS1511; ZVNU • ♂♂, ♀; Xuan Son N.P., Than stream, site 1, water flowing from the cave; 21°11.096‟N, 104°52.587‟E; 24 May 2015; Nguyen T.S leg.; TS1514; ZVNU • ♂♂; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 24 Aug 2015; Nguyen T.S leg.; TS1515; ZVNU • ♂, ♀♀; Xoan stream, near Lang village; 21°5.453‟N, 104°56.122‟E; 24 Aug 2015; Nguyen T.S leg.; TS8501; ZVNU • ♂♂, ♀, Xuan Son N.P., Than stream, site 3; 21°11.393‟N, 104°52.625‟E; 27 Aug 2015; Nguyen T.S leg.; TS8516; ZVNU • ♀♀; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 23 May 2015; Nguyen T.S leg.; TS1509; ZVNU • ♀♀; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 26 Aug 2015; Nguyen T.S leg.; TS8509; ZVNU • ♂♂, ♀; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 07 May 2016; Nguyen T.S leg.; TS1609; ZVNU • ♂♂, ♀; Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56.927‟E; 27 Aug 2015; Nguyen T.S leg.; TS8517; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56.927‟E; 08 May 2016; Nguyen T.S leg.; TS1617; ZVNU • ♀; Xuan Son N.P., Coi stream, site 2, near concrete bridge; 21°09.130‟N, 104°56.761‟E; 29 Aug 2014; Nguyen T.S leg.; TS1418; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 2, near concrete bridge; 21°09.130‟N, 104°56.761‟E; 24 May 2015; Nguyen T.S leg.; TS1518; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 3, in front of the cave; 21°01.190‟N, 104°56.624‟E; 24 May 2015; Nguyen T.S leg.; TS1519; ZVNU • 15 ♂♂, 12 ♀♀; Xuan Son N.P., Coi stream, site 3, in front of the cave; 21°01.190‟N, 104°56.624‟E; 08 May 2016; Nguyen T.S leg.; TS1619; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Tan Ong stream, 2km from Chin tang stream; 21°04.201‟N, 104°56.906‟E; 22 May 2015; Nguyen T.S leg.; TS1504; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Tan Ong stream, 2km from Chin tang stream; 21°04.201‟N, 104°56.906‟E; 25 May 2015; Nguyen T.S leg.; TS8504; ZVNU • ♀; Xuan Son N.P., Tan Ong stream, 4km from Chin tang stream; 21°04.288‟N 104°57.271‟E; 26 Aug 2014; Nguyen T.S leg.; TS1405; ZVNU • ♀♀; Xuan Son N.P., Tan Ong stream, 4km from Chin tang stream; 21°04.288‟N, 104°57.271‟E; 22 May 2015; Nguyen T.S leg.; TS1505; ZVNU • ♀♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 27 Aug 2014; Nguyen T.S leg.; TS1410; ZVNU • ♂, ♀♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 25 May 2015; Nguyen T.S leg.; TS1510; ZVNU • ♂, ♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 07 May 2016; Nguyen T.S leg.; TS1610; ZVNU • ♂; Xuan Son N.P., Chieng stream, near Ranger Station; 21°06.072‟N, 104°59.433‟E; 27 Aug 2014; Nguyen T.S leg.; TS1408; ZVNU • ♂; Xuan Son N.P., Lap stream, near the foot of Ngoc waterfall; 21°08.311‟N, 104°56.202‟E; 27 Aug 2014; Nguyen T.S leg.; TS1411; ZVNU • ♀♀; Xuan Son N.P., Lap stream, near the foot of Ngoc waterfall; 21°08.311‟N, 104°56.202‟E; 26 Aug 2015; Nguyen T.S leg.; TS8511; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Lap stream, near the foot of Ngoc waterfall; 21°08.311‟N, 104°56.202‟E; 07 May 2016; Nguyen T.S leg.; TS1611; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Lap stream, the first concrete bridge from Ngoc waterfall; 05 Jun 2013; Tran A.D et al leg.; TAD1332; ZVNU • ♀♀; Xuan Son N.P., Lap stream, the first concrete bridge from Ngoc waterfall; 21°8.398‟N, 104°56.303‟E; 26 Aug 2015; Nguyen T.S leg.; TS8512; ZVNU • 17 ♂♂, 14 ♀♀; Xuan Son N.P., Lap stream, the first concrete bridge from Ngoc waterfall; 21°8.398‟N, 104°56.303‟E; 07 May 2016; Nguyen T.S leg.; TS1612; ZVNU • ♂♂, 11 ♀♀; Xuan Son N.P., Lap stream, the second concrete bridge from Ngoc waterfall; 05 Jun 2013; Tran A.D et al leg.; TAD1333; ZVNU • 13 ♂♂, 18 ♀♀; Xuan Son N.P., Lap stream, the second concrete bridge from Ngoc waterfall; 21°08.322‟N, 104°56.256‟E; 23 May 2015; Nguyen T.S leg.; TS1513; ZVNU • 14 ♂♂, 22 ♀♀; Xuan Son N.P., Lap stream, the second concrete bridge from Ngoc waterfall; 21°08.322‟N, 104°56.256‟E; 07 May 2016; Nguyen T.S leg.; TS1613; ZVNU – Hoa Binh Prov • ♂♂, ♀♀; Lac Son, Tu Do commune, Mu stream (upstream of Mu waterfall); 27 Aug 2020; Tran A.D et al leg.; TAD20-01; ZVNU – Thanh Hoa Prov • ♀; Ben En N.P., Nhu Xuan, Tan Binh, stream 300m behind Xuan Ly ranger station; 26 Feb 2013; Pham T.D leg.; BE1302; ZVNU – Nghe An Prov • ♀; Pu Mat N.P., Khe Kem waterfall & stream, site #1; 20 Dec 2012; Ngo Q.H leg.; NQH1203; ZVNU • 11 ♂♂, ♀♀; Pu Mat N.P., Khe Kem stream, site #2, ca 300m downstream from waterfall; 20 Dec 2012; Ngo Q.H leg.; NQH1204; ZVNU • ♂♂, ♀; Pu Mat N.P., Khe Kem stream, site #3; 20 Dec 2012; Ngo Q.H leg.; NQH1205; ZVNU • ♂♂; Pu Mat N.P., Khe Kem stream, site #4; 20 Dec 2012; Ngo Q.H leg.; NQH1206; ZVNU • ♂♂, ♀♀; Con Cuong, Tung Huong village, Khe Thoi stream; 21 Dec 2012; Ngo Q.H leg.; NQH1210; ZVNU • ♀♀; Pu Mat N.P., Khe Kem waterfall & stream, site #1; 18 Apr 2013; Tran A.D et al leg.; TAD1310; ZVNU • ♀♀; Pu Mat N.P., Khe Kem waterfall & stream, site #2, ca 300m downstream from waterfall; 18 Apr 2013; Tran A.D et al leg.; TAD1311; ZVNU • ♂, ♀; Pu Mat N.P., Khe Kem stream, site #3, near visitor‟s hut; 18 Apr 2013; Tran A.D et al leg.; TAD1312; ZVNU • ♂; Pu Mat N.P., Khe Kem stream, site #6; 18 Apr 2013; Tran A.D et al leg.; TAD1315; ZVNU • ♂, ♀; Pu Mat N.P., Kem waterfall and stream; 30 Aug 2020; Tran A.D., Le P.L., Nguyen T.C leg.; TAD20-06; ZVNU • ♀♀; Pu Mat N.P., Kem stream, site 3, ca 1.5km from waterfall; 30 Aug 2020; Tran A.D et al leg.; TAD20-08; ZVNU • ♂; Pu Mat N.P., Chat stream, feeder of Choang stream; 01 Sep 2020; Tran A.D et al leg.; TAD20-14; ZVNU • ♂, ♀♀; Pu Mat N.P., Da Mai stream, feeder of Choang stream, near ranger post; 01 Sep 2020; Tran A.D & Nguyen T.C leg.; TAD20-16; ZVNU – Ha Tinh Prov • ♀; Vu Quang N.P., a small branch of Song Con river; 23 Apr 2003; Tran A.D leg.; TAD0303; ZRC Micronecta (Micronecta) ornitheia Nieser, Chen & Yang, 2005 Lao Cai Prov • 36 ♂♂, 31 ♀♀; Sa Pa, Thanh Phu, near junction of Nam Cang and Muong Hoa streams; 26 Oct 2013; Ngo Q.H leg.; TAD1360; ZVNU • ♂♂, ♀♀; Sa Pa, Hoang Lien N.P., Cat Cat; 01 Jun 2003; Tran A.D leg.; TAD0336; ZRC – Ha Giang Prov • ♂♂, ♀♀; Bac Me, road 176, Minh Son commune, stream at Ban Van bridge; 07 May 2014; Tran A.D et al leg.; TAD1403; ZVNU • ♂, ♀♀; Yen Minh, Na Khe commune, stream near Nat‟ road 4C; 08 May 2014; Tran A.D et al leg.; TAD1404; ZVNU • ♂♂; Vi Xuyen, Xin Chai commune, Da stream by the road from Thanh Thuy to Lao Chai; 09 May 2014; Tran A.D et al leg.; TAD1405; ZVNU • 15 ♂♂, ♀♀; Vi Xuyen, Nat‟ road 2, Phuong Tien commune, Suu stream, near bridge; 09 May 2014; Tran A.D et al leg.; TAD1406; ZVNU • ♂♂, 11 ♀♀; Vi Xuyen, Nat‟ road 2, Phuong Tien commune, Suu stream, near bridge; 09 May 2014; Tran A.D et al leg.; TAD1407; ZVNU • ♀; Vi Xuyen, National road 4C, Thuan Hoa commune, Nam Dieng stream, ca 12.5km to Ha Giang city; 09 May 2014; Tran A.D et al leg.; TAD1409; ZVNU • ♂, Xin Man, road 178, feeder stream of Nam Yen river, near bridge ca 2km from Coc Pai town; 11 May 2014; Tran A.D et al leg.; TAD1412; ZVNU – Cao Bang Prov • ♂♂, 20 ♀♀; Trung Khanh, Duc Hong commune, stream; 19 Dec 2013; Tran A.D et al leg.; TAD1376; ZVNU • ♂, ♀♀; Bao Lac, Dinh Phung commune, near Tung Suu, stream by the Nat‟ road 34; 20 Dec 2013; Tran A.D et al leg.; TAD1378; ZVNU • 20 ♂♂, 29 ♀♀; Bao Lac, Hung Dao commune, Nhi Ao river, near Nam Xui bridge; 20 Dec 2013; Tran A.D et al leg.; TAD1380; ZVNU • ♂♂, 12 ♀♀; Bao Lac, Bao Toan commune, Na Roa village, Khuoi Rong stream, feeder of Gam river; 20 Dec 2013; Tran A.D et al leg.; TAD1381; ZVNU – Phu Tho Prov • ♂, ♀♀; Xuan Son N.P., Ban Coi, Coi stream, site 3, by the road to Tan Son; 07 Jun 2013; Tran A.D et al leg.; TAD1339; ZVNU • ♂♂, ♀; Xuan Son N.P., Ha Bang stream, near the T- junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; 22 May 2015; Nguyen T.S leg.; TS1506; ZVNU • ♂, ♀♀; Xuan Son N.P., Xoan stream, near Lang village; 21°5.453‟N, 104°56.122‟E; 21 May 2015; Nguyen T.S leg.; TS1501; ZVNU • ♂; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 07 May 2016; Nguyen T.S leg.; TS1609; ZVNU • ♂; Xuan Son N.P., Chieng stream, near Ranger Station; 21°06.072‟N, 104°59.433‟E; 27 Aug 2014; Nguyen T.S leg.; TS1408; ZVNU • ♂, ♀♀; Xuan Son N.P., Chieng stream, near Ranger Station; 21°06.072‟N, 104°59.433‟E; 22 May 2015; Nguyen T.S leg.; TS1508; ZVNU • ♂, ♀♀; Xuan Son N.P., Chieng stream, near Ranger Station; 21°06.072‟N, 104°59.433‟E; 25 Aug 2015; Nguyen T.S leg.; TS8508; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Chieng stream, near Ranger Station; 21°06.072‟N, 104°59.433‟E; 06 May 2016; Nguyen T.S leg.; TS1608; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56.927‟E; 08 May 2016; Nguyen T.S leg.; TS1617; ZVNU – Thanh Hoa Prov • ♂♂, ♀; Pu Hu Nature Reserve, Muong Lat, Trung Ly, Co Luong, Cha Lan stream; 04 Apr 2013; Pham T.D leg.; PH1301; ZVNU • ♂♂; Pu Luong Nature Reserve, Ba Thuoc, Co Lung, Ban Khuyn, Khuyn stream; 18 Mar 2013; Pham T.D leg.; PL1303; ZVNU – Nghe An Prov • 24 ♂♂, 29 ♀♀; Ky Son, Nat‟ road 7, Ta Ca commune, Loi stream; 16 Apr 2013; Tran A.D et al leg.; TAD1301; ZVNU • ♂♂, ♀♀; Ky Son, Nat‟ road km191+ 572, stream at Ban Na bridge; 16 Apr 2013; Tran A.D et al leg.; TAD1304; ZVNU • 43 ♂♂, 34 ♀♀; Ky Son, Nat‟ road km 182+950, stream at Khe Nan bridge; 16 Apr 2013; Tran A.D et al leg.; TAD1305; ZVNU • ♂, ♀; Con Cuong, Lien Huong village, Khe Thoi stream; 21 Dec 2012; Ngo Q.H leg.; NQH1209; ZVNU • ♂♂, ♀♀; Con Cuong, Tung Huong village, Khe Thoi stream; 21 Dec 2012; Ngo Q.H leg.; NQH1210; ZVNU – Ha Tinh Prov • ♂♂, ♀♀; Vu Quang N.P., Song Con river; 23 Apr 2003; Tran A.D leg.; TAD0302; ZRC Micronecta (Micronecta) tuwanoni Nieser, Chen, Leksawasdi, Thanyakam & Duangsupa, 2004 Phu Tho Prov • ♂; Xuan Son N.P., Xoan stream, near Lang village; 21°5.453‟N, 104°56.122‟E; 21 May 2015; Nguyen T.S leg.; TS1501; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Xoan stream, near Lang village; 21°5.453‟N, 104°56.122‟E; 05 May 2016; Nguyen T.S leg.; TS1601; ZVNU Micronecta (Micronecta) spC.n Cao Bang Prov • ♂♂, ♀♀; same locality data as holotype; ZVNU – Phu Tho Prov • ♀♀; Xuan Son N.P., Chieng stream, near Ranger Station; 21°06.072‟N, 104°59.433‟E; 27 Aug 2014; Nguyen T.S leg.; TS1408; ZVNU • ♂; Xuan Son N.P., Ha Bang stream, near the T-junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; Nguyen T.S leg.; May 2016; TS1606ĐT; ZVNU • ♂♂, ♀; Xuan Son N.P., Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 07 May 2016; Nguyen T.S leg.; TS1610; ZRC • ♂; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 07 May 2016; Nguyen T.S leg.; TS1609; ZVNU • ♂; Xuan Son N.P., Kim Thuong, Xoan stream; 28 Aug 2013; Tran A.D et al leg.; TAD1343; ZVNU • ♂; Xuan Son N.P., Ban Coi, Coi stream, site 1, water from underground; 29 Aug 2013; Tran et al leg.; TAD1349; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 3, in front of the cave; 21°01.190‟N, 104°56.624‟E; 24 May 2015; Nguyen T.S leg.; TS1519; NHMW • ♀; Xuan Son N.P., Coi stream, site 3, in front of the cave; 21°01.190‟N, 104°56.624‟E; 27 Aug 2015; Nguyen T.S leg.; TS8519 ZVNU • ♂; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 24 May 2015; Nguyen T.S leg.; TS1515; ZVNU – Hanoi • ♂♂, ♀; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 17 Dec 2011; Ngo Q.H & Tran A.D leg.; TAD1127; ZVNU • ♂♂, 12 ♀♀; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 27 Apr 2012; Ngo Q.H & Tran A.D leg.; TAD1208; ZVNU – Ha Tinh Prov • ♀; Vu Quang N.P., Song Con river; 23 Apr 2003; Tran A.D leg.; TAD0302; ZRC Micronecta (Micronecta) spH.n Lao Cai Prov • 18 ♂♂, 15 ♀♀; samle locality data as holotype; ZVNU • ♂♂, ♀♀; Sa Pa, Hoang Lien N.P., Cat Cat; 01 Jun 2003; Tran A.D leg.; TAD0336; ZRC • ♂♂, ♀♀; Sa Pa, Cat Cat, Muong Hoa stream; 22 Apr 2011; Dinh N.H et al leg.; DNH11.01; ZVNU • ♂♂, ♀♀; Sa Pa, Su Pan, Cau May, Muong Hoa stream; 24 Apr 2011; Dinh N.H et al leg.; DNH11.12; NHMW • 30 ♂♂, 25 ♀♀; Sa Pa, km110 Nat Road #4D, Ngoi Duoi stream; 25 Apr 2011; Dinh N.H et al leg.; DNH11.14; ZVNU • ♂, ♀; Sa Pa, Nam Sai, Seo Nam Sai stream 1; 24 Oct 2012; Dinh N.H et al leg.; DNH12.09; ZVNU • ♂, ♀♀; Sa Pa, Sin Chai, Muong Hoa stream (Cat stream); 27 Oct 2013; Tran A.D et al leg.; TAD1365; ZVNU • ♂; Sa Pa, Cat Cat, Muong Hoa stream (Cat stream); 27 Oct 2013; Ngo Q.H et al leg.; TAD1367; ZVNU Micronecta (Micronecta) spG.n Phu Tho Prov • 14 ♂♂, 12 ♀♀; same locality data as holotype; ZVNU, NHMW • ♂♂, ♀; Xuan Son N.P., Ban Coi, Coi stream, site 2, near bridge; 07 Jun 2013; Tran A.D et al leg.; TAD1338; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Ban Coi, Coi stream, site 3, by the road to Tan Son; Tran A.D et al leg.; 07 Jun 2013; TAD1339; ZRC • ♂, ♀; Xuan Son N.P., Kim Thuong, Xoan stream; 28 Aug 2013; Tran A.D et al leg.; TAD1343; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Ban Coi, Coi stream, site 3, by the road to Tan Son; 29 Aug 2013; Tran A.D et al leg.; TAD1351; ZVNU • 11 ♂♂, 11 ♀♀; Xuan Son N.P., Xoan stream, near the T- junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 27 Aug 2014; Nguyen T.S leg.; TS1407; ZVNU • ♀♀; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 06 May 2016; Nguyen T.S leg.; TS1607; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 23 May 2015; Nguyen T.S leg.; TS1509; ZVNU • ♀; Xuan Son N.P., Xoan stream, Xoan village area; 21°05.270‟N, 104°57.591‟E; 07 May 2016; Nguyen T.S leg.; TS1609; ZVNU • ♀; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 24 May 2015; Nguyen T.S leg.; TS1515; ZVNU • ♂, ♀; Xuan Son N.P., Than stream, site 3; 21°11.393‟N, 104°52.625‟E; 24 May 2015; Nguyen T.S leg.; TS1515; ZVNU • ♂♂, 13 ♀♀; Xuan Son N.P., Than stream, site 3; 21°11.393‟N, 104°52.625‟E; 27 Aug 2015; Nguyen T.S leg.; TS8516; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Ha Bang stream, near the T-junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; 26 Aug 2014; Nguyen T.S leg.; TS1406; ZVNU • ♂; Xuan Son N.P., Ha Bang stream, near the T-junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; 06 May 2016; Nguyen T.S leg.; TS1606ĐT; ZVNU • ♂, ♀♀; Xuan Son N.P., Tan Ong stream, 4km to Chin Tang stream; 21°04.288‟N, 104°57.271‟E; 26 Aug 2014; Nguyen T.S leg.; TS1405; ZVNU • ♂♂, ♀; Xuan Son N.P., Tan Ong stream, 4km to Chin Tang stream; 21°04.288‟N, 104°57.271‟E; 22 May 2015; Nguyen T.S leg.; TS1505; ZVNU • ♂; Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56.927‟E; 08 May 2016; Nguyen T.S leg.; TS1617; ZVNU • ♂♂, ♀♀; Xuan Son N.P., Coi stream, site 2, near concrete bridge; 21°09.130‟N, 104°56.761‟E; 24 May 2015; Nguyen T.S leg.; TS1518; ZVNU Micronecta (Micronecta) spD.n Lao Cai Prov • 20 ♂♂, ♀♀; same locality data as holotype; ZVNU, NHMW • ♂♂, 11 ♀♀; Sa Pa, Hoang Lien N.P., Cat Cat; 01 Jun 2003; Tran A.D leg.; TAD0336; ZRC • ♂♂, ♀♀; Sa Pa, Hoang Lien N.P , Sin Chai; 01 Jun 2003; Tran A.D leg.; TAD0337; ZRC • ♂; Sa Pa Ban Den, Ta Van, Muong Hoa stream; 24 Apr 2011; Dinh N.H et al leg.; DNH11.13; ZVNU • ♂♂, ♀; Sa Pa, Nui Xe, Tram Ton area, feeder stream of Vang stream; 23 Apr 2011; Dinh N.H et al leg.; DNH11.07; ZVNU • ♂♂; Sa Pa, Ban Ho, Nam Pu stream 1; 21 Oct 2012; Dinh N.H et al leg.; DNH12.01; ZVNU • 11 ♂♂, ♀♀; Sa Pa, Nam Cang, Nam Cang stream; 23 Oct 2012; Dinh N.H et al leg.; DNH12.08; ZVNU • ♀; Sa Pa, Nam Sai, Seo Nam Sai stream 2; 24 Oct 2012; Dinh N.H et al leg.; DNH12.10; ZVNU • ♂, ♀♀; Sa Pa, Ban Ho, Nam Pu stream (feeder stream of Muong Hoa stream), site 1, at lower section; 26 Oct 2013; Tran A.D et al leg.; TAD1361; ZVNU • ♂♂; Sa Pa, Trung Chai, km119 Nat Road #4D; 28 Oct 2013; Ngo Q.H et al leg.; TAD1370; ZVNU Micronecta (Micronecta) spE.n Nghe An Prov • 12 ♂♂, 17 ♀♀; same locality data as holotype; ZVNU, NHMW) • ♂♂; Con Cuong, Lien Huong village, Khe Thoi stream; 21 Dec 2012; Ngo Q.H leg.; NQH1209; ZVNU • ♂♂, ♀♀; Con Cuong, Tung Huong village, Khe Thoi stream; 21 Dec 2012; Ngo Q.H leg.; NQH1210; ZRC • ♀; Pu Mat N.P., Khe Kem waterfall & stream, site #2, ca 300m downstream from waterfall; Tran A.D et al leg.; 18 Apr 2013; TAD1311; ZVNU – Cao Bang Prov • ♂, ♀♀; Bao Lac, Hung Dao commune, Nhi Ao river, near Nam Xui bridge; 20 Dec 2013; Tran A.D et al leg.; TAD1380; ZVNU Micronecta (Pardanecta) haliploides Horváth, 1904 Ninh Binh Prov • ♂, ♀♀; Gia Vien, Van Long Wetland Nature Reserve; 25 Aug 2002; Hoang Q.K & Dinh V.K leg.; VNNB0201; ZRC – Binh Dinh Prov • ♂♂, 17 ♀♀; Phu My district, Tra O lagoon; 10 May 2012; Tran, A.D leg.; TAD1216; ZVNU – Dong Nai Prov • ♀; Cat Tien N.P., Bau Sau (Crocodile lake); 13 Nov 2009; Tran A.D leg.; TAD0910; ZVNU • ♂♂, ♀; Vinh Cuu, Ma Da, Bo Hao lotus pond; 15 Apr 2010; Pham T.D leg.; PTD1010; ZVNU – Ba Ria - Vung Tau Prov • ♂♂, ♀♀; Con Dao, Dam Trau area, Ong Ta stream; 13 Apr 2010; Tran A.D et al leg.; TAD1009; ZVNU – Ca Mau Prov • ♀; U Minh district, Khanh An commune, 14 hamlet; 17 Apr 2018; Nguyen T.A.N leg.; CM1819; ZVNU Micronecta (Sigmonecta) quadristrigata Breddin, 1905a Quang Nam Prov • ♂, ♀; Duy Xuyen district, My Son temple complex; 15°45.439‟N, 108°07.577‟E; Aug 2016; Chu T.D leg.; MS1614; ZVNU • ♂♂, ♀♀; Duy Xuyen district, My Son temple complex; 15°46.308‟N, 108°06.621‟E; Aug 2016; Chu T.D leg.; MS1629; ZVNU • ♂; Duy Xuyen district, My Son temple complex; 15°44.865‟N, 108°07.81‟E; Apr 2017; Chu T.D leg.; MS1701; ZVNU • ♀; Duy Xuyen district, My Son temple complex; 15°45.312‟N, 108°07.377‟E; Apr 2017; Chu T.D leg.; MS1707; ZVNU • ♀♀; Duy Xuyen district, My Son temple complex; 15°45.341‟N, 108°07.393‟E; Apr 2017; Chu T.D leg.; MS1708; ZVNU • ♂♂, ♀♀; Duy Xuyen district, My Son temple complex; 15°46.355‟N, 108°07.079‟E; Apr 2017; Chu T.D leg.; MS1725; ZVNU – Dong Nai Prov • ♂♂, ♀♀; Vinh Cuu, Ma Da, Bo Hao lake, west side; 10 Apr 2009; Tran A.D leg.; TAD0905; ZVNU • ♀; Cat Tien N.P., Bau Sau (Crocodile lake); 06 Nov 2009; Tran A.D leg.; TAD0929; ZVNU • ♀; Vinh Cuu, Ma Da, Bo Hao lake, east side, near forest ranger station; 10 Apr 2009; Tran A.D leg.; TAD0906; ZVNU Micronecta (Sigmonecta) altera Wróblewski, 1972a Lang Son Prov • ♂, ♀; Loc Binh, Mau Son, Khuoi Tang stream, 590 m a.s.l.; 06 Nov 2020; Tran A.D et al leg.; TAD20-34; ZVNU – Phu Tho Prov • ♀; Xuan Son N.P., Kim Thuong, Chieng stream, near ranger station; 28 Aug 2013; Tran A.D et al leg.; TAD1345; ZVNU • ♀; Xuan Son N.P., Chieng stream, near ranger station; 21°06.072‟N, 104°59.433‟E; 22 May 2015; Nguyen T.S leg.; TS1508; ZVNU • ♀; Xuan Son N.P., Ban Coi, Coi stream, site 2, near bridge; 07 Jun 2013;Tran A.D et al leg.; TAD1338; ZVNU • ♂; Xuan Son N.P., Than stream, site 2; 21°11.257‟N, 104°52.382‟E; 24 May 2015; Nguyen T.S leg.; TS1515; ZVNU – Hanoi • ♂♂, ♀♀; Nhue river, Noi bridge; 25 Mar 2010; Pham T.M leg.; ZVNU • ♂♂, ♀♀; Thanh Huong Lake (used for recreational fishing), near Khuat Duy Tien road (Thanh Xuan district); 29 Mar 2010; Pham T.M leg.; HN04; ZVNU • ♂, ♀♀; paddy-field near Noi Bridge of Nhue River; 04 May 2010; Pham T.M leg.; HN15; ZVNU • ♂♂, 10 ♀♀; Lotus pond near West Lake Water Park (right); 30 Mar 2010; Pham T.M leg.; HN02; ZVNU • ♂♂, ♀♀; Lotus pond near West Lake Water Park (right); 20 Mar 2010; Pham T.M leg.; HN02; ZVNU • ♂♂, ♀♀; Lotus pond near West Lake Water Park (right); 17 Mar 2010; Pham T.M leg.; HN02; ZVNU • ♂♂, ♀♀; Lotus pond near West Lake Water Park (left); 17 Mar 2010; Pham T.M leg.; HN01; ZVNU • 17 ♂♂, 12 ♀♀; Nhue River, at Lien Mac area; Tran A.D leg.; 25 Mar 2010; HN08; ZVNU • ♂♂, ♀♀; paddy-field at Thuan village, Phu Lam ward (Ha Dong district); 31 Mar 2010; Pham T.M leg.; HN11; ZVNU • ♂♂, ♀; Nhue River; 18 Aug 2010; Tran A.D leg.; TAD1017; ZVNU • 11 ♂♂, 30 ♀♀; Nhue River; 18 Aug 2010; Tran A.D leg.; TAD1018; ZVNU • ♂, ♀♀; paddy-field at Dai Mo area (Tu Liem district); 04 May 2010; Pham T.M leg.; HN13; ZVNU • ♂♂, ♀♀; paddyfield at Ngoc Truc area (Tu Liem district); 04 May 2010; Pham T.M leg.; HN14; ZVNU • ♂; West Lake; 17 Mar 2010; Pham T.M leg.; HN03; ZVNU • ♂♂, 11 ♀♀; Linh Dam Lake; 30 Mar 2010; Pham T.M leg.; ZVNU • ♂♂, ♀♀; Linh Dam Lake; 20 Apr 2010; Pham T.M leg.; ZVNU • ♂♂, ♀♀; Day River, at Mai Linh Bridge (Ha Dong district); 21 Apr 2010; Pham T.M leg.; HN12; ZVNU • ♂, ♀♀; Thanh Xuan district; 07 Aug 2019; Nguyen V.P.; NVP1901; ZVNU • ♂, ♀; Ba Vi N.P., Khoang Xanh, Tien stream 95m a.s.l.; 17 Dec 2011; Ngo Q.H & Tran A.D leg.; TAD1127; ZVNU • ♀♀; Ba Vi N.P., Minh Quang, Cai stream, 65m a.s.l.; 26 Apr 2012; Ngo Q.H et al leg.; TAD1207; ZVNU • ♂♂; Ba Vi N.P., Minh Quang, Cai stream, 65m a.s.l.; 17 Dec 2011; Ngo Q.H et al leg.; TAD1126; ZVNU • ♂; Ba Vi N.P., Khanh Thuong, Mit stream, open area near village, 40m a.s.l.; 26 Apr 2012; Ngo Q.H & Tran A.D leg.; TAD1205; ZVNU • ♂, ♀♀; Ba Vi N.P., Ba Trai, Ri stream, 67m a.s.l.; 27 Apr 2012; Ngo Q.H leg.; TAD1209; ZVNU – Thanh Hoa Prov • ♂; Pu Luong Nature Reserve, Ba Thuoc, Co Lung, Ban Khuyn, Khuyn stream; 18 Mar 2013; Pham T.D leg.; PL1303; ZVNU – Quang Nam Prov • ♂, ♀♀; Duy Xuyen district, My Son temple complex; 15°46.355‟N, 108°07.079‟E; Apr 2017; Chu T.D leg.; MS1725; ZVNU • ♂♂; Duy Xuyen district, My Son temple complex; 15°46.978‟N, 108°07.334‟E; Apr 2017; Chu T.D leg.; MS1724; ZVNU – Binh Dinh Prov • ♂♂; Phu My district, Tra O lagoon; 10 May 2012; Tran A.D leg.; TAD1216; ZVNU – Binh Thuan Prov • ♂♂; Phan Thiet City, Huynh Thuc Khang road, Tien stream; 11 May 2019; Ha T.N leg.; NHPT19.01; ZVNU – Dong Nai Prov • ♂♂, ♀; Vinh Cuu, Ma Da stream, near Rang Rang forest station (near bridge); 09 Apr 2009; Tran A.D leg.; TAD0902; ZVNU Micronecta (Unguinecta) melanochroa Nieser, Chen & Yang, 2005 Phu Tho Prov • ♂; Xuan Son N.P., Ban Coi, Coi stream, site 1, water from underground; 07 Jun 2013Tran A.D et al leg.; TAD1337; ZVNU • ♂; Xuan Son N.P., Kim Thuong, Xoan stream; 28 Aug 2013; Tran A.D et al leg.; TAD1343; ZVNU • 14 ♂♂, 19 ♀♀; Xuan Son N.P., Dong Son, Than stream, site 1; 29 Aug 2013; Tran A.D et al leg.; TAD1346; ZVNU • ♂♂, ♀♀; Xoan stream, near the T- junction intersects with Ha Bang stream; 21°05.303‟N, 104°57.559‟E; 27 Aug 2014; Nguyen T.S leg.; TS1407; ZVNU • ♂, ♀; Lap stream, the first concrete bridge from Ngoc waterfall; 21°08.398‟N, 104°56.303‟E; 28 Aug 2014; Nguyen T.S leg.; TS1412; ZVNU • ♂♂; Lap stream, the second concrete bridge from Ngoc waterfall; 21°08.322‟N, 104°56.256‟E; 28 Aug 2014; Nguyen T.S leg.; TS1413; ZVNU – Nghe An Prov • 12 ♂♂, ♀♀; Con Cuong, Lien Huong village, Khe Thoi stream; 21 Dec 2012; Ngo Q.H leg.; NQH1209; ZVNU Micronecta (Unguinecta) polhemusi Nieser, 2000 Lao Cai Prov • ♂; Sa Pa, Nui Xe area, Vang stream and its feeders; 25 Oct 2020; Tran A.D et al leg.; TAD20-19; ZVNU – Quang Ninh Prov • ♀; Dong Rui (in bonsai pot); 13 Sep 2019; Nguyen T.A.N leg.; ZVNU – Lam Dong Prov • ♂♂, ♀♀; Da Lat, Suoi Vang, 18 km NW from Da Lat; 21 May 2003; Tran A.D leg.; TAD0331; ZRC Micronecta spI.n Nghe An Prov • ♂♂, ♀; same locality data as holotype; ZVNU • ♂♂, ♀; Pu Mat N.P., Khe Kem stream, site #4; 20 Dec 2012; Ngo Q.H leg.; NQH1206; ZVNU • ♂♂, ♀; Pu Mat N.P., Khe Kem stream, site #5; 20 Dec 2012; Ngo Q.H leg.; NQH1207; ZVNU • ♂♂, ♀♀; Pu Mat N.P., Khe Kem stream, site #6; 20 Dec 2012; Ngo Q.H leg.; NQH1208; NHMW • ♂♂; Pu Mat N.P., Khe Kem stream, site #5; 18 Apr 2012; Ngo Q.H leg.; TAD1314; ZVNU • 13 ♂♂, ♀♀; Pu Mat N.P., Chat stream, feeder of Choang stream; 01 Sep 2020; Tran A.D et al leg.; TAD20-14; ZRC • ♂; Pu Mat N.P., Choang stream, near Ban Bu; 01 Sep 2020; Tran A.D & Nguyen T.C leg.; TAD20-17; ZVNU – Cao Bang Prov • ♂; Hoa An, stream at Ban Say bridge; 17 Dec 2013; Tran A.D et al leg.; TAD1372; ZVNU • ♂♂; Quang Uyen, road 207, Đoc Lap commune, stream #2; 18 Dec 2013; Tran A.D et al leg.; TAD1374; ZVNU – Phu Tho Prov.: • ♂; Xuan Son N.P., Ban Coi, Coi stream, site 3, by the road to Tan Son; 07 Jun 2013; Tran A.D et al leg.; TAD1339; ZVNU • ♂; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 22 May 2015; Nguyen T.S leg.; TS1507; ZVNU • ♀; Xuan Son N.P., Xoan stream, near the T-junction intersects with Ha Bang stream; 21°5.303‟N, 104°57.559‟E; 06 May 2016; Nguyen T.S leg.; TS1607; ZVNU • ♀♀; Xuan Son N.P., Ha Bang stream, near the T-junction intersects with Xoan stream; 21°5.318‟N, 104°58.87‟E; 22 May 2015; Nguyen T.S leg.; TS1506; ZVNU • ♂♂; Xuan Son N.P., Coi stream, site 1, by the road to Tan Son; 21°09.204‟N, 104°56.927‟E; 08 May 2016; Nguyen T.S leg.; TS1617; ZVNU • ♀♀; Ha Bang stream, Ha Bang village area; 21°04.343‟N, 104°59.182‟E; 07 May 2016; Nguyen T.S leg.; TS1610; ZVNU – Lam Dong Prov.: • ♂; Bao Loc, Damb‟ri waterfall; 19 May 2003; Tran A.D leg.; TAD0326; ZRC Micronecta fugitans Breddin, 1905a Binh Thuan Prov • 14 ♂♂, 11 ♀♀; Phan Thiet City, Huynh Thuc Khang street, Suoi Tien stream; 11 May 2019; Ha T.N leg.; NHPT19.01; ZVNU – Dong Nai Prov • ♂♂, ♀; Cat Tien N.P., Dak-Lua stream (near Dak-Lua station); 09 Apr 2010; Tran A.D & Pham T.D leg.; PTD1001; ZVNU Micronecta tarsalis Chen, 1960 Quang Nam Prov • ♂; Duy Xuyen district, My Son temple complex; 15°44.885‟N, 108°07.351‟E; Apr 2017; Chu T.D leg.; MS1706; ZVNU • ♂♂, ♀; Duy Xuyen district, My Son temple complex; 15°46.228‟N, 108°07.155‟E; Apr 2017; Chu T.D leg.; MS1723; ZVNU 117 Synaptonecta issa (Distant, 1910) Dong Nai Prov • ♂, ♀; Vinh Cuu, Ma Da, Bo Hao lotus lake; 18 Apr 2009; Tran A.D leg.; TAD0911; ZVNU • ♂; Cat Tien N.P., Dak-Lua stream (near Dak-Lua station); 09 Apr 2010; Tran A.D & Pham T.D leg.; PTD1001; ZVNU • ♂, ♀; Vinh Cuu, Ma Da, Bo Hao lotus pond; 15 Apr 2010; Pham T.D leg.; PTD1010; ZVNU Agraptocoria hyalinipennis Fabricius, 1803 Dong Nai Prov • ♂; Cat Tien NP, night collecting; 13 May 2003; Tran A.D leg.; TAD0318; ZRC Sigara septemlineata Paiva, 1918 Lao Cai Prov • ♂♂; Sa Pa, Hoang Lien NP, Nui Xe, small waterflow; Tran A.D leg.; Jun 2003; TAD0338; ZRC • ♂; Lao Cai, Hoang Lien N‟Park, Sin Chai, Tran A.D leg.; July 2004; TAD0415; ZRC • ♂♂; Sa Pa, Cat Cat, Muong Hoa stream; Dinh N.H et al leg.; 22 Apr 2011; DNH11.01; ZVNU • ♀; Sa Pa, km110 Nat Road #4D, Ngoi Duoi stream; Dinh N.H et al leg.; 25 Apr 2011; DNH11.14; ZVNU • ♀; Sa Pa; Nui Xe, Tram Ton area, Vang stream; Dinh N.H et al leg.; 23 Apr 2011; DNH11.06; ZVNU ♀; Sa Pa, waterfall and stream by roadside from Sa Pa town to Nui Xe, ca 13km from Sa Pa town; Dinh N.H et al leg.; 23 Apr 2011, DNH11.10; ZVNU • ♂, ♀♀; Sa Pa, Cat Cat, Muong Hoa stream; Tran A.D leg.; 30 May 2013; TAD1318; ZVNU • ♂; Sa Pa, Sin Chai, Muong Hoa stream (Cat stream); Tran A.D et al leg.; 27 Oct 2013; TAD1365; ZVNU Ha Giang Prov • ♀; Minh Ngoc commune, small stream by Nat‟ road 34 ca 20km to Bac Me town; Tran A.D et al leg.; 07 May 2014; TAD1401, ZVNU • ♂; Vi Xuyen, Xin Chai commune, Da stream by the road from Thanh Thuy to Lao Chai; Tran A.D et al leg.; 09 May 2014; TAD1405; ZVNU • ♀; Vi Xuyen, Nat‟ road 2, Phuong Do commune, Phuong Do stream, near bridge; Tran A.D et al leg.; 09 May 2014; TAD1407; ZVNU Cao Bang Prov • ♂♂, ♀; Bao Lac, Hung Dao commune, stream at Nam Xui bridge; Tran A.D et al leg.; 20 Dec 2013; TAD1379; ZVNU • ♂; Bao Lac, Hung Dao commune, Nhi Ao river, near Nam Xui bridge; Tran A.D et al leg.; 20 Dec 2013; TAD1380; ZVNU Hanoi • ♂, ♀; Ba Vi N‟Park, Khanh Thuong, Mit reservoir, 80m asl.; Ngo Q.H & Tran A.D leg.; 26 Apr 2012, TAD1204; ZVNU • ♂, ♂♂; Ba Vi N‟Park, Ba Trai, Ri stream, 67m asl.; Ngo Q.H leg., 27 Apr 2012; TAD1209; ZVNU • ♂♂; Ba Vi N‟Park, Khoang Xanh, Tien stream, 95m asl.; Ngo Q.H & Tran A.D leg.; 27 Apr 2012; TAD1208; ZVNU 118 Sigara sp.1 Lao Cai Prov • ♂; Sa Pa, Cat Cat, Muong Hoa stream; Dinh N.H et al leg.; 22 Apr 2011; DNH11.01; ZVNU • ♂, ♀; Sa Pa, Nui Xe, Tram Ton area, pools near Vang stream; Dinh N.H et al leg.; 25 Oct 2013; TAD1355; ZVNU 119 ...ĐẠI HỌC QUỐC GIA HÀ NỘI TRƯỜNG ĐẠI HỌC KHOA HỌC TỰ NHIÊN Hà Tuyết Ngân NGHIÊN CỨU THÀNH PHẦN LỒI CỦA LIÊN HỌ BỌ XÍT NƯỚC CORIXOIDEA (INSECTA: HETEROPTERA) TẠI VIỆT NAM THE STUDY ON... SUPERFAMILY CORIXOIDEA (INSECTA: HETEROPTERA) IN VIETNAM Chuyên ngành: Động vật học Mã số: 8420101.03 LUẬN VĂN THẠC SĨ KHOA HỌC NGƯỜI HƯỚNG DẪN KHOA HỌC: PGS.TS Trần Anh Đức XÁC NHẬN HỌC VIÊN ĐÃ... Corixoidea in Asia .7 1.2 An overview of taxonomical research on the superfamily Corixoidea in Vietnam .8 1.3 Some information about natural conditions of Vietnam