R. W. CROSSKEY 



Species with hairs or setulae on the prosternum occur mainly in the Goniinae. A 

 specimen with this character is most likely to belong to this subfamily and could 

 be tested first in the key to Goniinae. 



KEY TO SUBFAMILIES OF ORIENTAL TACHINIDAE 



[Note. This key is intended mainly for quick placement of those Oriental Tachinidae that 

 are regularly reared from insect pests or that are commonly encountered in the field. It 

 disregards many localized, rare or aberrant forms unlikely to be concerned in routine identifica- 

 tion. To make the key as practicable as possible the subfamilies have been run out in parts, 

 often on characters that have little or no phyletic significance.] 



i Eyes hairy (the hairing long and easily visible in silhouette at low magnifications). 



[Parasites of Lepidoptera] .......... 2 



- Eyes bare or nearly so (hairing if present very short and sparse and only visible at 



high magnifications) ........... 3 



2 Prosternum bare TACHININAE (part) (p. 53) 



- Prosternum haired or setulose (e.g. as Text-fig. 136) (care required: sometimes only 



one hair on each side) ....... GONIINAE (part) (p. 106) 



[Also running out here are two genera of Tachininae, viz. Hyleorus in Voriini 

 distinguished from Goniinae by wing venation as in Text-fig. 92, and Chryso- 

 somopsis in Ernestiini distinguished by uniformly metallic green or blue-green 

 colour. The former genus sometimes occurs in collections of reared parasites 

 but the latter does not.] 



3 Face raised into a heavy fusiform or broad roof-like facial carina, the carina partly or 



almost wholly visible when head seen in profile (e.g. Text-fig. 28) and often 

 separating deeply excavate antennal foveae ....... 4 



- Face not raised into a definite facial carina, nearly always flattened or sunken and 



invisible in profile (weakly swollen in the mid-line in a few forms and then sometimes 



just visible on the upper part) ......... 5 



4 Wings with a double transverse black band in the apical half (appearance of wing 



reminiscent of Chrysops, Text-fig. 90). Facial carina in the form of a broad 

 swelling of the whole face that is sharp in the mid-line. Arista bare. [Parasites 

 oj Hemiptera (Pentatomidae)~\ .... Eutherini (Phasiinae, part) (p. 34) 



- Wings without a pattern of black cross-bands. Facial carina strongly raised from 



the face so as to form a heavy ridge that is usually bulbous or flattened on its 

 anterior surface (and flanked by well formed antennal foveae). Arista usually 

 plumose or with long conspicuous pubescence. [Parasites of Coleoptera] 



PROSENINAE (DEXIINAE) (part) (p. 43) 

 [The small rare tribe Imitomyiini (Dufouriinae), of which hosts are unknown, 

 also runs here but differs by having the abdominal Ti -f- 2 not excavate to its 

 hind margin] 



5 Prosternum haired or setose (e.g. as Text-fig. 136, but sometimes only a single hair 



on each side) ............ 6 



- Prosternum bare ............ 7 



6 Second sa seta and pra seta absent. Two strong post ia setae of which anterior 



one as near to transverse suture as to posterior one. Prosternum with a char- 

 acteristic very long seta on each side that is directed straight downwards. Sternites 

 largely exposed. Scutellum with two pairs of marginal setae, basals and strong 

 crossed apicals (Text-fig. 82). Pallid luteous or reddish yellow forms. [Parasites 

 of adult Scarabaeoidea (Coleoptera)] . Palpostomatini (part) (Tachininae, part) 



- Second sa seta present (sometimes weak), pra seta usually present. Usually three 



post ia setae, if only two developed then anterior one nearer to posterior one than 



