TACHINIDAE OF AUSTRALIA 85 



- Vibrissae inserted well above the level of the epistomal margin. Eyes bare or 



haired. Parafacials completely haired or haired at least on the upper halves. 

 Ocellar setae usually absent or weak, sometimes moderately strong in 9- Apical 

 scutellar setae usually very weak and hair-like, sometimes absent, seldom well 

 developed ............. 15 



15 Facial regions of head with yellow or orange ground colour and bright yellow 

 pollinosity. Eyes bare. Basicosta reddish yellow. Legs usually all or mainly 

 reddish yellow, at least tarsi reddish yellow. Haired areas of parafacials not 

 nearly contiguous with haired areas of genal dilations (therefore a conspicuous 

 bare area between haired part of parafacial and the gena). On average larger 

 forms, length 7-12 mm, often with yellow to golden orange hair on sides of thorax 

 and sometimes also the abdomen .... FROGGA TTIMYIA Townsend 



- Facial regions of head with rather indeterminate ground colour, not bright yellow 



and if pale usually rather reddish, pollinosity greyish white to very pale yellowish. 

 Eyes bare or haired, often densely haired. Basicosta nearly always dark brownish 

 or blackish brown. Legs brownish black, sometimes with reddish or reddish 

 yellow tibiae, tarsi dark (except for reddish yellow fore tarsi in male of A . 

 scutellata). Haired areas of parafacials nearly contiguous with haired areas of 

 genal dilations (only a very narrow bare gap between parafacial and genal 

 hairing). On average smaller forms, length 5-9 mm, without pale hair on thorax 

 or abdomen ...... ANAGONIA Brauer & Bergenstamm 



[Note: no really tangible distinction has been found between Froggattimyia 

 and Anagonid] 



Tribe EXORISTINI 



The exoristines are moderately well represented in Australia and Tasmania, 

 seven genera being known from the area. None is endemic, and several of them 

 occur widely in the Oriental Region {Eozenillia, Austrophorocera) or in most of 

 the zoogeographical regions (Exorista, Stomatomyia); Hillomyia (= Hillia Malloch, 

 preocc.) is known from only a few specimens but is perhaps an essentially Papuan 

 genus that has reached the Northern Territory of Australia. 



The tribe is reasonably distinctive, possessing the combination of small pre-alar 

 seta plus non-convergent subapical scutellar setae plus abruptly angulate bend to 

 vein M (the bend normally accompanied by at least a trace of a fold in the position 

 of M 2 continuing towards the wing margin, Text-fig. 87); the genera found in 

 Australia have unusually dependable characters, and most are considerably easier 

 to identify reliably than the genera in most other goniine tribes. Some features 

 common to all the Australian exoristines may be usefully noted as follows: 

 prosternum always haired; male always without proclinate orbital setae; mid 

 tibia with a submedian v seta; mid tibia with two or more ad setae; hind tibia 

 always without pd preapical seta; second costal sector bare ventrally; infrasquamal 

 hairs absent; parafacials never completely haired. 



Key to Australian Genera of EXORISTINI 



1 2 + 3 dc setae. Wing with cell R b closed before the wing margin and with a 

 distinct petiole. Distance on vein M from bend to m-cu as great as or greater 

 than that from m-cu to r—m. Scutellum without definite preapical setae. 

 Humeral callus with two setae. Eyes bare ....... 2 



