genus octonoba in japan

genus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japangenus octonoba in japan

ACTA ARACHNOL., XXX, 21 (1), 1981 SEVEN NEW SPECIES OF THE GENUS OCTONOBA (ARANEAE: ULOBORIDAE) FROM THE RYUKYUS, JAPAN By Hajime YO3HIDA Entomological Laboratory, College of Agriculture, University of Osaka Prefecture, Sakai* Synopsis Y0sIIIDA, Hajime (Entomol Lab., Col Agr., new species of the genus Octonoba (Araneae : Japan Acta arachnol., 30: 21-32 (1981) Seven new species of the genus Octonoba These species inhabit only a few islands in the utions are not overlapping one another In my previous Uloborus were recorded transferred genus recognize which resemble reported one their identifications of the genus from many islands Because all examined are not varians species to describe another seven new morphologically species I wish to express Dr S MORIUTI for their direction from and ecologically one species of the genus Octonoba from Okinawa of my new species Before going further, and and sybotides, Octonoba collected in the Ryukyus or sybotides but different In this paper, I wish species to the genus Octonoba SHIMOJANA, ORI and others species, varians of the Rykyus, but I cannot of the are described from the Ryukyus limited extent, and their distrib- paper (YOsHIDA, 1980), five Japanese two Japanese specimens Univ Osaka Pref., Sakai) : Seven Uloboridae) from the Ryukyus, my hearty My thanks the Ryukyus, OPELL (1979) Island, which is one thanks to Prof S ITo are also due to Prof T YAGINUMA for his kind anvice and loan of material * Present Yamagata address Prefecture : Higashi Junior High School, 760 Mukaimachi, Mogami-Machi, Hajime YosHIDA 22 Diagnosis MALE : Carapace light, marginal, hairs Eyes blothes bium and and Palpal originating Carapace outlined with white pigments, dusky : median from oval, brown, longitudinal maxillae organ dark evenly with stripes, black convex to male, and Abdomen but differs Octonoba yaginumai 0, uncinota n sp., Fig Fig 0, yaginumai 0, yaeyamensis hairs pale apically spur or rolled thin spine and largely in dorsal view : Larger and n, sp., female n sp., male and web with dusky legs Ladusky embolus encircling and in profile darker and egg-cocoon its of reclining dusky inwardly; ovate female a pair to brown, Chelicerae follows n sp., web and grayish Sternum concave to stripe fine, light brown prone narrowed Fig Fig median with grayish with with and Octonoba yellowish Abdomen basally apex Genus covered clothed apophysis before FEMALE : Allied of the than male Seven New Species of Octonoba Coloration Carapace and markings variable, with broadly oval, evenly convex triangular in profile, highly arched base 23 yellow, Abdomen gray, brown ovate in dorsal in basal third Epigynum projections or an anteromedian lobe ECOLOGY: Complete orb-webs are made in the horizontal or black aspect, sub- with a pair of position, and are often embelished with distinctive silken ribbons Female make polygonal slender egg-cocoons, which are typical for the species or Remarks Seven new specees are closely alike one another ecology, but are distinguished by male palpus on male palpus are given in the key uncinata in general appearences Descriminating In female, distinction and okinawensis is easy by epigynum, and characters based of grandiconcava, but that of the other four spe- cies is difficult As to names of the part of male palpus, I chiefly follow OPELL (1979) But median apophysis bulb (MAB) has various projections in Octonoba These pro- jections are temporarily named in this paper : Sa (spur a) forms concave or rolled inwardly lobe, which is OPELL'S median apophysis spur (MAS) ; Sb is dark and small projection situated center of MAB, which Uloborus or Zosis: Sc is large projection continuing New species are divided into three groups : 1) Group I (grandiconcava MAB with various is similar to MAS of from MAB and uncinata) projections Sa with tip curved towards inside Two Japanese species, yesoensis and sybotides, belong to this group 2) Group II (okinawensis) MAB reduced 3) MAB broad These having Sa forms Group III (yaginumai, grandiprojecta, Sa with tip straight tanakai Sb present and yaeyamensis) Sc present in three species new species may have been divided from a common ancestral been differentiated For the description, MOA) refer respectively dian and posterior Holotypes preserved a U-shaped lobe stock, due to the isolation by the island five standard to the anterior abbreviations median, (AME, ALE, PME, PLE and anterior lateral, posterior me- lateral eye, and to the median ocular area and some paratypes in the collection of new species of the Arachnologial described in this paper Society of East Asia, are Otemon Hajime YosHIDA 24 Fig Gakuin University, Distribution Ibaraki, Key of Sa with Sa with tip curved tip straight Sa large - Sa small - Sc present Sc absent Sc tapering to apex Sc broad and round - Sc large Sc small 6, - Sa distinct Sa attached spp, in the Ryukyus Osaka to Species of based - Octonoba inside Octonoba on Male in the Ryukyus Palpus .2 grandiconcava uncinata n sp n spy grandiprojecta from MAB which is reduced to MAB which is broad n sp yaeyamensis tanakai okinawensis , yaginumai n sp n sp n sp n sp Seven New Species of Octonoba Octonoba grandiconcava 25 n sp (Figs 5-8) MALE (Holotype) : 1.13 mm Total length 3.21 mm Carapace Eye sizes and interdistances PLE 0.08; AME-AME 2.16 mm ; patella length (mm) : AME 0.09; ALE 0.07; PME 0.09; 0.08; PME-PME 0.16 MOA length and tibia 1.26 mm ; width 2.50 mm ; metatarsus 0.24 mm First femur 2.21 mm ; tarsus 0.84 mm Second femur 0.80 mm ; fourth 1.17 mm Legs dusky ; in third and fourth ones, femora and tibiae with pale bands Palpal organ : Sa large and concave, the tip being curved towards FEMALE (Paratype) width 1.02 mm inside; embolus (E) largely encircing : Total length Eye sizes and PME 0.09; PLE 0.09; AME-AME First femur 2.50 mm ; patella 0.93 mm specimens romedian Second femur and dusky 4.31 mm interdistances Carapace (mm) : 0.10; PME-PME 0.20 and fourth 1.51 mm MOA length separated behined projections MATERIAL EXAMINED: Holotype : dusky Epigynum into two parts; : 14 ~, same data tarsus in dark with an ante- openings , Koniya, Amami-Oshima Pref., 13-VIII-1978, H YOSHIDA Paratypes 0.29 mm 2.31 mm; Sternum in light specimens lobe which is indistinctly 1.10 mm; 0.11; ALE 0.06; tibia 2.75 mm ; metatarsus 1.22 mm; marginally length AME situated Is., Kagoshima as holotype ; 12 , , Yui, Amami-Oshima Is., 13-VIII-1978, H YOSHIDA: , Yuwan, AmamiOshima Is., 1-VIII-1964, T KIMURA DISTRIBUTION: Amami-Oshima Island Octonoba uncinata n sp (Figs 2, 5, f9-12) MALE (Holotype) : Total length 1.16 mm Eye sizes and interdistances AME-AME 0.08; PME-PME 0.17 3.53 mm Carapace length 1.24 mm ; width (mm) : AME 0.09; ALE 0.05; PME 0.08; MOA length 0.22 mm First femur 2,32 mm ; patella and tibia 2.24 mm ; metatarsus 2.03 mm; tarsus 0.89 mm Second femur 1.24 mm; fourth 1.22 mm Sternum dusky marginally Legs pale with dusky bands Palpan organs : Sa small ; MAB with a hooked projection ; embolus short FEMALE (Paratype) : Total length 4.37 mm Carapace 1.18 mm Eye sizes and interdistances PLE 0.08; AME-AME length 1.34 mm; width (mm) : AME 0.09; ALE 0.05; PME 0.09; 0.09; PME-PME 0.17 MOA length 0.28 mm First femur Hajime YosHIDA 26 Figs 6-8 Octonoba grandiconcava n sp Male palpus, ventral view Female epigynum, ventral view Female genitalia, dorsal view Figs 9-12 uncinata n, sp Male palpus, ventral view 10 Male palpus, apical view 11 Female epigynum, ventral view 12 Female ensis n sp 13 Male palpus, ventral Female 2.37 mm; genitalia, patella dorsal view and tibia Second femur 1.27 mm ; fourth with posterolateral projections genitalia, dorsal view Figs view 14 Female epigynum, 2.63 mm ; 1.24 mm metatarsus Legs pale 2.24 with 13-15 ventral mm; tarsus dusky bands okinawview 15 0.87 mm Epigynum Seven New Species of Octonoba MATERIAL EXAMINED: Holotype : (~, Ikema, Pref., 10-VIII-1978, H YOSHIDA Paratypes 11 , , Kametoku, Tokunoshima 27 Tokunoshima Is., Kagoshima : 19 ~, ~, same data as holotype; Is., 11-VIII-1978, H YOSHIDA; , Mt Ino- gawa-lake, Tokunoshima Is., 29-III-1978, H YOSHIDA; Hetono, Tokunoshima Is., 12-VIII-1978, H YOSHIDA Other specimens : ? , Kushiken, Okinoerabu Is., Kagoshima KIMURA ; Pref., , 25-VII-1964, T KIMURA, , Koyone, Okinoerabu DISTRIBUTION: Tokunoshima , same locality, Is., 2,3-VIII 1966, Y TARUMI and Okinoerabu Octonoba 29-VII-1964, T Islands okinawensis n sp (Figs 5, 13-15) Octonoba species 2: OPELL, 1979, Bull Mus comp Zool 148: 512, pl 6-D MALE (Holotype) : Total length 3.26 mm Carapace 1.24 mm Eye sizes and interdistances length 1.37 mm; width (mm) : AME 0.05; PME 0.08; AME-AME 0.12; PME-PME 0.21 MOA length 0.20 mm First femur 2.37 mm; patella and tibia 2.63 mm; metatarsus 2.34 mm ; tarsus 0.92 mm Second femur 1.34 mm; fourth 1.29 mm Legs brown ; third and fourth organ : Sa straight and distinct ones with dark bands Palpal from MAB, which is reduced ; embolus rather thick, with a radix (R) at base FEMALE (Paratype) : Total length 4.94 mm Carapace 1.34 mm Eye sizes and interdistances PLE 0.10; AME-AME 0.07; PME-PME 0.22 MOA length 2.81 mm; patella and tibia 3.00 mm ; metatarsus femur 2.13 mm; fourth bands Epigynum 2.44 mm 6-VIII-1978, H YOSHIDA; sclerotized, : 18 , , Enobi, Gushikawa, , a , Gushigami, DISTRIBUTION: Okinawa 1.00 mm Second Island ones with pale large and triangular pro- Is., Okinawa , same data as holotype ; 6-VIII-1978, H YOsHIDA; , same locality, 8-VII-1978, H YOSHIDA; M YOSHIMURA; 0.32 mm First femur 2.69 mm ; tarsus , Awa, Nago, Okinawa 7-VIII-1978, H YOSHIDA Paratypes , b , Yona, Kunigami, 1.46 mm ; width Legs dusky ; third and fourth with a pair of weakly jections MATERIAL EXAMINED: Holotype : Pref., length (mm) : AME 0.12; ALE 0.07; PME 0.10; , Hetona, Kunigami, 30-VI-1977, H YOSHIDA, , Gushigami, , Shun, Naha, , 27-VI-1977, 3-XI-1978, T GoTo Hajime YosHIDA 28 Figs dorsal view 16-20 Octonoba yaginumai n, sp 16 Female carapace and abdomen, view 17 Male carapace and abdomen, dorsal view 18 Male palpus, ventral 19 Female epigynum, ventral view 20 Female genitalia, dorsal view Octonoba gaginumai n, sp (Figs 1, 3, 5, 16-20) MALE (Holotype) : Total length 3.68 mm Carapace 1.16 mm Eye sizes and interdistances PEL 0.09; AME-AME 1.49 mm; fourth 1.39 mm; width 0.08; PME-PME 0.16 MOA length 0.30 mm First 2.44 mm ; patella and tibia 2.76 mm ; metatarsus femur length (mm) : AME 0.11; ALE 0.07; PME 0.11; 1.49 mm Legs brown ; third median and distal dusky bands ; both tibiae distal dusky bands Palpal organ : Sa straight flat and broad ; Sb small and dark, FEMALE (Paratype) : Total length femur 2.42 mm; tarsus 1.00 mm Second and fourth femora with and metatarsi with median and and attached to MAB, which is 3.81 mm Carapace length 1.41 mm ; Seven New Species of Octonoba width 1.29 mm Eye sizes and interdistances 0.09; PLE 0.10; AME-AME femur mm 2.44 mm; patella (mm) : AME 0.10; ALE 0.07; PME 0.09; PME-PME 0.23 and 29 MOA length tibia 2.88 mm ; metatarsus Second femur 1.50 mm ; fourth 1.44 mm 0.29 mm First 2.56`mm ; tarsus 1.00 Legs dusky, with indistinct pale markings and bands Epigynum with a pair of projections MATERIAL EXAMINED: Holotype : , Chinen, Chinen, Okinawa Is., Okinawa Pref., 4-VIII-1978, H YOSHIDA Paratypes as holotype, c, : 18 ~, ~, , same locality, 30-VI-1977, H YOSHIDA, H YOSHIDA; 15 , , Hyakuna, Tamagusuku, same data , same locality, l9-VIII-1978, 9-VIII-1978, H YOSHIDA, , same locality, 1-X-1978, T GoTo DISTRIBUTION: Okinawa Island REMARKS : The specific name is a patronym in honor of Prof T YAGINUMA, Osaka Octonoba grandiprojecta n sp (Figs 5, 21-23) MALE (Holotype) : Total 1.29 mm patella Second femur tinct and 1.44 mm Palpal organ : Sa straight; Total Eye sizes and First femur 2.31 mm; 0.88 mm first and Second second 2.56 mm ; 0.12; 1.31 mm; 4.31 mm (mm) : AME same locality, 16-III-1979, H YOSHIDA DISTRIBUTION: Kumejima Island length 0.11; MOA length 2.69 mm ; metatarsus 1.56 mm pale stripes projections ; openings situated outside projections MATERIAL EXAMINED: Holotype : a, Kanegusuku, Pref., 17-III-1979, H YOSHIDA Paratypes 1.00 mm to apex Carapace PME-PME 0.24 fourth legs with longitudinal tarsus femur Legs brown, with dusky bands indis- interdistances patella and tibia femur 0.29 mm First Sb present ; Sc tapering length PME 0.09; PLE 0.10; AME-AME 1.41 mm ; width (mm) : AME 0.10; ALE 0.07; PME 0.09; tibia 2.88 mm ; metatarsus 1.50 mm; fourth 1.05 mm length 0.09; PME-PME 0.23 MOA length FEMALE (Paratype) : width 3.81 mm Carapace Eye sizes and interdistances PLE 0.10; AME-AME 2.44 mm ; length : , 1.41 mm ; ALE 0.07; 0.37 mm 2.31 mm ; tarsus Base color dusky Epigynum Kumejima Both with a pair of Is., Okinawa , same data as holotype, c, Hajime YOSHIDA 30 Octonoba grandiprojecta n, sp 21 Male palpus, ventral view 23 dorsal view Figs 24-26 0, tanakai n sp 24 Male palpus, ventral view 25 Female epigynum, ventral view 26 Female genitalia, dorsal view Figs 27-29 yaeyamensis n sp 27 Male palpus, ventral view 28 Female epigynum, ventral view 29 Female genitalia, dorsal view Figs Female 21-23 genitalia, Octonoba tanakai n sp (Figs 5, 24-26) MALE (Holotype) : Total 1.10 mm PLE 0.09; length 3.31 mm Carapace length 1.29 mm ; width Eye sizes and interdistances (mm) : AME 0.10; ALE 0.06; PME 0.07; AME-AME 0.10; PME-PME 0.18 MOA length 0.24 mm First femur Seven New Species or Octonoba 2.31 mm; patella and Second femur 1.56 mm; tibia 2.69 mm; fourth metatarsus 31 2.44 mm ; tarsus 1.44 Legs brown, with distinct Palpal organ : Sa straight ; Sb present ; Sc small and broad FEMALE (Paratype) : Total length 5.13 mm Carapace width 1.32 mm Eye sizes and PME 0.10; PLE 0.10; AME-AME First femur 2.31 mm; 1.06 mm interdistances 2.69 mm; Second femur 1.56 mm ; fourth length bands 1.56 mm; (mm) : AME 0.12; ALE 0.07; 0.10; PME-PME 0.18 patella and tibia 1.06 mm dusky MOA length metatarsus 0.24 mm 2.44 mm ; tarsus 1.75 mm MATERIAL EXAMINED: Holotype : a , Shimozato, Pref., 23-III-1979, H YOSHIDA Paratypes : Hirara, Miyako Is., Okinawa , same data as holotype, , , same locality, 22-III-1979, H YOSHIDA DISTRIBURION: Miyako Island REMARKS: The specific name is a patronym in honor of Mr H TANAKA, Sakai Octonoba yaeyamensis n sp (Figs 4, 5, 27-29) MALE (Holotype) : Total length 2.58 mm Carapace length 1.39 mm ; width 1.13 mm Eye sizes and interdistances (mm) : AME 0.10; ALE 0.06; PME 0.08; PLE 0.08; AME-AME 0.16 MOA length 0.24 mm First 0.08; PME-PME femur 2.39 mm ; patella and tibia 2.71 mm; metatarsus 2.42 mm ; tarsus 0.97 mm Second femur 1.41 mm ; fourth 1.27 mm Legs brown ; in first and fourth ones, tibiae and metatarsi tibiae and straight with distal dusky bands ; in third and fourth metatarsi with median ; Sb present ; Sc large and 2.56 mm; patella and 3.88 mm Carapace length 1.32 mm; width (mm) : AME 0.10; ALE 0.07; PME 0.10; 0.10; PME-PME 0.22 MOA length tibia Palpal organ : Sa and round FEMALE (Paratype) : Total length 1.12 mm Eye sizes and interdistances PLE 0.09; AME-AME distal dusky bands ones, femora, 3.13 mm ; metatarsus Second femur 1.38 mm; fourth 1.63 mm Epigynum openings situated outside projections MATERIAL EXAMINED: Holotype : 17-III-1977, H YOSHIDA Paratypes : , Amitori, , 0.32 mm First femur 2.69 mm ; tarsus 1.00 mm with a pair of projections ; Iriomote , same data Is., Okinawa Pref., as holotype ; , Sonai, Iriomote Is., 28-VI-1977, M YOSHIMURA; ~, Ohara, Iriomote Is., 1-VII-1977, M YOSHIMURA Other specimens : ~, Mt Omoto-lake, Ishigaki Is., Okinawa 32 Hajime YOSHIDA Pref., 12-VII-1976, H YOSHIDA,.12 ~, a, same locality, 2-VIII-1978, H YOSHIDA; , Mt Banna-lake, Ishigaki Is., 1-VIII-1978, H YOSHIDA; Is., 10-VII-1976, H YOSHIDA, DISTRIBUTION: Ishigaki , Kabira, Ishigaki , same locality, 3-VIII-1978, H YOSHIDA and Iriomote Islands References LEHTINEN, P K., 1967 Classification of the cribellate spiders and some allied families, with notes on the evolution of the suborder Araneomorpha Ann, zool Fenn., 4: 199-468 OPELL, B D., 1979 Revision of the genera and tropical American species of the family Uloboridae Bull Mus, comp Zool., 148: 443-549 YAGINUMA, T., 1960 Spiders of Japan in Colour i-viii+l-186+app 1-8, pls 1-56 Hoikusha, Osaka YOSHIDA, H., 1980 Six Japanese species of the genera Octonoba and Philoponella (Araneae : Uloboridae) Acta arachnol., 29: 57-64  ... distinguished by male palpus on male palpus are given in the key uncinata in general appearences Descriminating In female, distinction and okinawensis is easy by epigynum, and characters based... tarsus 1.00 Legs dusky, with indistinct pale markings and bands Epigynum with a pair of projections MATERIAL EXAMINED: Holotype : , Chinen, Chinen, Okinawa Is., Okinawa Pref., 4-VIII-1978, H YOSHIDA... absent Sc tapering to apex Sc broad and round - Sc large Sc small 6, - Sa distinct Sa attached spp, in the Ryukyus Osaka to Species of based - Octonoba inside Octonoba on Male in the Ryukyus