The Insects - Outline of Entomology 3th Edition - Chapter 5 pot

... oviposition in insects. 5. 1 BRINGING THE SEXES TOGETHER Insects often are at their most conspicuous when syn- chronizing the time and place for mating. The flashing lights of fireflies, the singing of crickets, ... transfer of sperm via the insertion of part of the male’s aedeagus (edeagus), the penis, into the repro- ductive tract of the female. In males of...

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... defensive and other com- pounds are products of the epidermis, which is a near- continuous, single-celled layer beneath the cuticle. Many of these compounds are secreted to the outside of the insect ... a poison-injecting sting (Fig. 14.11) and the eggs are ejected at the base of the sting. In all other cases, the eggs pass down a canal in the shaft of the ovipo...

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... including: the meta- bolism of carbohydrates, lipids, and nitrogenous com- pounds; the storage of glycogen, fat, and protein; the synthesis and regulation of blood sugar; and the syn- thesis of major ... by the plant. By comparison, a macerate-and-flush strategy is typical of Heteroptera, such as mirids and coreids. These insects disrupt the tis- sues of plants or oth...

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... numbers of insects is the role of sexual selection in the diversifica- tion of many insects. The propensity of insects to become isolated in small populations (because of the fine scale of their ... classification and their roles in our economic and wider lives. First, we outline the field of entomology and the role of ento- mologists, and then introduce the...

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... that of its neigh- bors and together the array of all ommatidia provides the insect with a panoramic image of the world. Thus, the actual image formed by the compound eye is of a series of apposed ... insensitive to the wing tone of males of their species. Neither can the male detect the wing tone of immature females – the Johnson’s organ in his antenna respo...

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... renders the tissues sensitive to EH and permits the release of EH into the hemolymph (see section 6.2.4 for further discus- sion of the actions of eclosion hormone). Apolysis at the end of the fifth ... case when the photoperiodic response of the maternal generation of silkworms affects the eggs of the next generation. The ability of insects to recognize...

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... as wings held roof-like over the abdomen, fore wings either membranous or in the form of tegmina of uni- form texture, and with the rostrum arising ventrally close to the anterior of the thorax, ... or mistaken. The fore-wing-derived halteres of strep- sipterans are gyroscopic organs of equilibrium with the same functional role as the halteres of Diptera (although...

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... nature. 9 .5. 2 Fungus farming by leaf-cutter ants The subterranean ant nests of the genus Atta ( 15 spe- cies) and the rather smaller colonies of Acromyrmex (24 species) are amongst the major earthen ... complex circulation of air through the passageways of the nest, as illustrated for the above-ground nest of the African Macrotermes natalen- sis in Fig. 12.10. Th...

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... proponents of the pre- ferred exite–endite theory speculate that the progenitor of the pterygotes had aquatic immature stages. Support for the latter hypothesis appears to come from the fact that the ... hundreds of kilometers from shore in the Pacific Ocean. The dis- tribution of these insects coincides with mid-oceanic accumulations of flotsam, where food of terr...

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... native range. The host-specificity of potential control agents must be tested, either inside or outside the country of introduction and, in the former case, always in quaran- tine. The results of these ... Interpreting the early evolution of the angiosperms is contentious, partly because of the paucity of fossilized flowers prior to the period of radiation, and als...

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