entomology

1. INSECT ABDOMEN

2. primary segment
secondary segment
Insect Abdomen - segmentation

3. Insect Abdomen
tergum
sternum
pleural
membrane

4. T5 T6
T7 T8
T9
T10
T11
cerci
cerci
Insect abdomen - 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

11. Development of Genitalia

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 a theme!

15. Katydid ovipositor

16. Other Modifications for Oviposition
Diptera - Musca

17. Ichneumon wasp ovipositor

18. Hymenoptera - Stinger

19. Hymenoptera - Stinger
gonoplac
Tergum 9
first gonapophysis (lancet)
second gonapophysis (stylet)

20. Hymenoptera - Stinger
stylet
lancet
Poison canal
lancet

21. Insect Abdomen - Generalized Male Genitalia
cercus
anus
gonostylus
gonocoxa
aedeagus