Diptera 301 



n. Mouth parts vestigial. OESTRlD^ffi;. See page 



297 for generic synopsis, 

 nn. Mouth parts well developed. 



o. Mi-i-2 straight, hence cell Rs wide open in 

 the margin; costa ending at the tip of Rs; 

 three stemopleurals present; antenna! 

 arista plumose. Syllegopiera. Europe. 

 .... (Syllegopterin^) . . Dexiid^ in part 

 00. Mi+2 bent, hence cell Rs narrowed in the 

 margin; stemopleurals rarely wanting, 

 usually 1:1 or 0:1; facial plate strongly 

 produced below vibrissa! angle like the 

 bridge of the nose; antennal arista bare. 

 Parasitic on Hemiptera and Coleoptera. 

 Allophora, Cistogaster, Clytia, Phasia, 

 etc. (Phasiin^) . . Tachinid^ in part, 

 mm. Conjxuictiva of the ventral sclerites invisible 

 (fig. I6la). 

 n. Second ventral sclerite of the abdomen lying 

 with its edges either upon or in contact with 

 the ventral edges of the corresponding 

 dorsal sclerite. 

 o. Outermost posthumeral almost always lower 

 (more ventrad) in position than the pre- 

 sutural macrochaeta; fifth ventral abdomi- 

 nal sclerite of the male cleft beyond the 

 middle, often strongly developed; body 

 color very frequently metallic green or 

 blue, or yellow; arista plumose. (CALLI- 



PHORIN.ffi;) MUSCID.ffi; in part. 



See page 303 for generic synopsis. 

 00. Outermost posthumeral macrochasta on 

 level or higher (more dorsad) than the 

 presutural macrochffita; arista bare, pube- 

 scent, or plumose only on the basal two- 

 thirds; body coloring usually grayish 



(fig. 106) SARCOPHAGID.ffi; 



p. Fifth ventral sclerite of the male either 

 wanting or with the caudal margin 

 straight; presutural intraalar rarely 



present (SARCOPHAGIN.ffi;) 



q. Fifth ventral abdominal sclerite of the 

 male much reduced, the remaining 

 segments with straight posterior mar- 

 gin, overlapping scale-like; in the 

 female only segment one and two scale- 

 like, the others wholly or in part 

 covered; stemopleurals usually three 

 or more. Sarcophaga and related 

 genera. 



