Orders

Adult Diptera Features

Body Type

1. Flattened dorsoventrally; usually wingless; coxae distantly separated .............32
Not as above ........................................................... 2

4. Body and wings hairy .............................(moth flies) PSYCHODIDAE
Body and wings not obviously hairy ........................................ 5

6. Slender bodies and long legs (very fragile appearing) ........................... 7
Bodies not slender ..................................................... 10

11. Arista absent, although terminal stylus may be present; frontal suture absent .....................................12
Arista (large spine midway on antennae) present; frontal suture usually present................................17 12. Vertex deeply indented between eyes; no metallic coloring ................................(robber flies) ASILIDAE
Vertex not indented or metallic colored .....................................13 14. Body usually with dense hair, empodium bristlelike...........Ihee flies) BOMBYLADAE
Body without dense hair; empodium pulviliform....15

17. Frontal suture absent ...................18
Frontal suture present........................................19

22. Ocelli absent ......... (pyrgotid flies) PYRGOTIDAE
Ocelli present....23 23. Yellow to brown in color....(marsh flies) SCIOMYZIDAE
Black or metallic green in color ........................(otitid flies) OTITIDAE 27. Light yellow in color resembling honeybee ....................................(horse bot flies) OESTRIDAE
Dark -colored ...............................(bot and warble flies) OESTRIDAE 28. Ridge or distinct bulge beneath and behind scutellum; arista bare ........................(tachina flies) TACHINIDAE
No distinct ridge or bulge as above; arista at least partly plumose ................................29

29. Hypopleuron without row of bristles .......................................30
Hypopleuron with distinct row of bristles ....................... 31

30. Underside of scutellum lacking fine setae ...............(muscid flies) MUSCIDAE
Underside of scutellum with fine setae .........(anthomyiid flies) ANTHOMYIIDAE 33. Eyes absent or minute; observable neck present ............(bat flies) STREBLIDAE
Eyes moderate, round; head partially retracted into thorax ............(louse flies) HIPPOBOSCIDAE