TACHINIDAE OF ORIENTAL REGION 109 



if occasionally the bend rather evenly rounded (some Ethillini) then outer part of 

 lower calypter bent downwards. Subapical scutellar setae subparallel or weakly 

 divergent. [More homogeneous forms always simultaneously with bare pro- 

 pleuron, haired or setulose prosternum, submedian v seta on mid tibia, and 

 excavation of abdominal Ti + 2 reaching to hind margin] .... 6 



6 Lower calypter normal, its outer part not bent downwards. Bend of vein M 



nearly always with at least a trace of an M 2 appendix or at least a darkened fold 

 in the wing membrane continuing towards the wing margin (e.g. as Text-fig. 103). 

 Eyes bare or haired. Three or four post dc setae . . EXORISTINI (p. 117) 



- Lower calypter bent abruptly downwards on its outer part (except in Mycteromyiella 



but then <$ without reclinate orbital setae). Bend of vein M without trace of 

 M 2 appendix or fold (Text-fig. 104). Eyes haired (hairing long and dense). Four 

 post dc setae ETHILLINI (p. 1 19) 



7 Ocellar setae reclinate. [Forms with exceptionally broad frons in both sexes, bare 



eyes, 3 4- 4 dc setae, and a pair of characteristic stiff erect divergent spiniform 

 setae just above the tip of the scutellum] .... GONIINI (p. 132) 



- Ocellar setae proclinate or absent. [Forms usually without such characteristics 



simultaneously] ............ 8 



8 Eyes very large, occupying almost the whole side of the head, the gena reduced to a 



narrow strip below the eye that is not as deep as the width of the third antennal 

 segment or of the profrons (Text-figs 6, 53, 58, 62) ..... 9 



- Eyes relatively smaller, genal depth usually at least as much as the width of the third 



antennal segment or of the profrons (narrower than profrons in a few eryciine 

 forms with strongly protruding profrontal region) . . . . . . 11 



9 Barette completely haired. Humeral callus usually with five well differentiated 



setae (at least in o") of which the three main setae stand in a triangle, o* without 

 reclinate orbital setae. Parafacials usually haired. Eyes densely haired 



WINTHEMIINI (part) (p. 121) 



- Barette haired only at the anterior end or bare. Humeral callus with not more than 



four well differentiated setae, the three main setae usually standing in a straight 

 line (in a triangle in some Carcelia). $ with reclinate orbital setae. Parafacials 

 bare. Eyes bare or haired . . . . . . . . . 10 



10 [Parasites of Lepidoptera] ....... CARCELIINI (p. 122) 



- [Parasites of vespoid Hymenoptera] . . . ANACAMPTOMYIINI (p. 126) 



[These tribes cannot satisfactorily be differentiated on adult characters and are 

 only maintained as separate because of the unique biology of the Anacampto- 

 myiini. In practice the anacamptomyiines are almost never collected in 

 isolation from the host nests, and specimens without host data that run to 

 couplet 10 will almost always belong to Carceliini. It may be noted that 

 Anacamptomyiini always have bare eyes and have extremely large contiguous 

 flattened puparial spiracles, features which assist in differentiation from many 

 Carceliini.] 



11 Barette completely haired. Humeral callus with five differentiated setae (at least 



in o") of which the three main setae stand in a triangle. Eyes densely haired 



WINTHEMIINI (part) (p. 121) 



- Barette haired at its anterior end only or bare (fully haired in Bactromyiella, genus 



of uncertain affinity temporarily retained in Eryciini). Humeral callus with fewer 



than five setae. Eyes haired or bare . . . . . . . . 12 



12 Vibrissae inserted at a level above that of the epistomal margin (rarely only slightly 



above, as in $ I sostuvmia) . 3 + 4 dc setae. Inner posterior angle of the lower 

 calypter well developed, and inner margin of lower calypter abutted closely 

 against the scutellum. q* often with a very well developed close-set ad fringe on 

 the hind tibia, and sometimes with dense secondary sexual hair fascicles on venter 

 of abdominal T 4 STURMIINI (p. 127) 



