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Insect genitalia
The document discusses the anatomy and structures of insect abdomens. It describes the segmentation of the abdomen into primary and secondary segments. The primary appendages of the abdomen include cerci, which are modified in males of some orders to function as claspers during mating. Secondary appendages include abdominal gills in aquatic larvae and prolegs in lepidopteran larvae. The document outlines the generalized structures of female and male insect genitalia, and variations in female structures related to oviposition in different orders.
Insect genitalia
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- 2. primary segment secondary segment InsectAbdomen - segmentation
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- 4. T5 T6 T7 T8 T9 T10 T11 cerci cerci Insectabdomen - Primary appendages paraproct epiproct
- 5. Insect abdomen -Primary appendages Cerci
- 6. Insect abdomen -Primary appendages Cerci - modfied as claspers Male Odonata
- 7. Insect abdomen -Primary appendages Cerci - modfied as claspers Male Phasmida (stick insects)
- 8. Insect abdomen -Primary appendages Cerci - modfied as caudal gills Odonata Larvae
- 9. Insect abdomen -Secondary appendages Abdominal gills - in aquatic larvae Ephemeroptera Trichoptera Megaloptera
- 10. Insect abdomen -Secondary appendages Prolegs - Lepidoptera larvae Prolegs
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- 13. Insect Abdomen -Generalized Female Genitalia gonostyle (gonoplac) gonapophysis 8 gonapophysis 9 gonocoxite 9 gonocoxite 8 gonapophysis 9gonapophysis 8 gonostyle (gonoplac)gonapophysis 9 gonapophysis 8gonocoxite 9 gonocoxite 8 gonopore cercus anus
- 14. Variations on atheme!
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- 16. Other Modifications forOviposition Diptera - Musca
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- 19. Hymenoptera - Stinger gonoplac Tergum9 first gonapophysis (lancet) second gonapophysis (stylet)
- 20. Hymenoptera - Stinger stylet lancet Poisoncanal lancet
- 21. Insect Abdomen -Generalized Male Genitalia cercus anus gonostylus gonocoxa aedeagus