224 GENITALIA OF MALE DIPTERA AND MECOPTERA 



Explanation of Plates 



Fig. 1. — Lateral view of terminal structures of male ephemerid Blasturus 



cupidus. 

 Fig. 2. — Lateral view of terminal structures of male tenthredinid Sirex 



edioardsii. 

 Fig. 3. — Genitalia of male tenthredinid Tenthredella verticalis. The parts 



shown were originally dorsal, but have become secondarily 



ventrally located through a torsion or revolution of the parts 



through one hundred and eighty degrees about the long axis. 

 Fig. 4. — Diagram of parts of genitalia of male ephemerid, ventral view. 

 Fig. 5. — Diagram of parts of genitaha of male sawfly, ventral view. 

 Fig. 6. — Dorsal view of terminal structures of male mecopteron Chorista 



australis. 

 Fig. 7. — Dorsal view of terminal structures of male dipteron Gnoj>homyia 



tristissima. 

 Fig. 8. — Genitalia of male sawfly Dolerus collaris. The parts shown were 



originally ventral, but have become secondarily dorsal as the 



result of torsion. 

 Fig. 9. — Terminal structures of male dipteron Sciara sciophila, the originally 



dorsal structures have been turned over so as to lie in a ventral 



position when in situ. 

 Fig. 10. — Dorsal view of terminal structures of the male dipteron Eriocera 



fidtonensis. 

 Fig. 11. — Lateral view of terminal structures of male dipteron Tipula valida. 

 Fig. 12. — Dorsal view of terminal structures of male dipteron Epiphragma sp. 



(related to E . fascipennis) . 

 Fig. 13. — Ventral view of terminal structures of male panori)id Panorpa 



nebulosa. 

 Fig. 14. — Lateral view of terminal structures of a male nymphal jassid 



(cicadellid) . 

 Fig. 15. — Lateral view of terminal structures of male trichopteron PIiUg- 



polatmis distinctus. 

 Fig. IG. — Lateral view of terminal structures of male lepidopteron Microp- 



teryx Eriocephnla) sepeUa. 

 Fig. 17. — Ventral view of terminal structures of male panorpid Panorpa 



liigiibris. 

 Fig. IS. — Dorsal view of terminal structures of male panorpid Pa7wrpodcs sp. 

 Fig. 19. — Lateral view of terminal structures of male lepidopteron Microp- 



teryx (Eriocephala) calthella. 

 Fig. 20. — Lateral view of terminal structures of male panorpid Panorpa 



lugubris. 

 Fig. 21. — Lateral view of terminal structures of female dipteron Sciara 



sciophila. 

 Fig. 22. — Lateral view of male genitalia of dipteron Eristalis tenax. 



