94 R- W. CROSSKEY 



— Two or three sternopleural setae (i + i or 2 + i). Second aristal segment not 



at all elongate ............n 



10 One pair of reclinate orbital setae. Ocellar setae absent. Mid tibia with at least 



two ad setae . . SISYROPA Brauer & Bergenstamm [part: S. taylori Curran] 



— Two or three pairs of reclinate orbital setae. Ocellar setae present, strong. Mid 



tibia with one ad seta ....... PARADRINO Mesnil 



1 1 Facial ridges strongly setose up most of their height. One pair of reclinate orbital 



setae. Dorsum of thorax shining bluish black, without pattern ... 12 



— Facial ridges bare. Two pairs of reclinate orbital setae. Dorsum of thorax 



yellowish grey to golden pollinose with a bold pattern of four black vittae on 

 prescutum, and a large black anteromedian area and pair of black sublateral 

 vittae on the scutum ...... CALOZENILLIA Townsend 



12 Ocellar setae absent. One strong isolated ad seta on mid tibia . PALI A Curran 



— Ocellar setae present. Two or more strong ad setae on mid tibia 



PALES Robineau-Desvoidy 



13 Parafacials completely covered with long strong hair (hairing very conspicuous). 



Ocellar setae directed outwards and not at all forwards. Lateral scutellar setae 

 absent. Parafrontals covered with long strong inclinate setulae that are nearly as 

 strong as the frontal setae. $ with very strong external vertical setae 



PARAGONIA Mesnil 



— Parafacials bare or with rather weak inconspicuous hairing confined to upper 



halves. Ocellar setae proclinate or absent (slightly divaricate in Winthellia). 

 Lateral scutellar setae present or absent. Parafrontals usually without such 

 strong setae outside the frontal setae, g usually without definite external 

 vertical setae ............ 14 



14 Lateral scutellar setae absent (scutellum therefore with only three pairs of marginal 



setae, the basals, subapicals and apicals). Upper halves of parafacials at least 

 partially haired. Three sternopleural setae, g abdomen without secondary 

 sexual modified hair ........... 15 



Lateral scutellar setae present (scutellum with a total of four or five pairs of marginal 

 setae). Upper halves of parafacials with or without hairing. Three or four 

 sternopleural setae. <J abdomen usually with some or most of the hair of the 

 venter of T4 (sometimes also T3) modified . . . . . . . 17 



15 Ocellar setae present. Facial ridges bare (except for the usual few setulae on 



lowermost quarter immediately above vibrissae). Abdominal tergites 1+2 

 and 3 each with a pair of strong median marginal setae. One or both of inter- 

 mediate abdominal tergites with discal setae. Upper occiput with irregular 

 black setulae behind the postocular row . . . . . . . 16 



— Ocellar setae absent. Facial ridges strongly setulose for more than half their 



height. Abdominal tergites 1+2 and 3 without median marginal setae. 

 Intermediate abdominal tergites without discal setae. Upper occiput without 

 black setulae behind the postocular row AN AM AST AX Brauer & Bergenstamm 



16 Mesonotum shining bluish black. Abdomen shining blackish green with traces of 



reddish ground colour (not noticeably pollinose) TASMANIOMYIA Townsend 



— Mesonotum greyish white pollinose with four narrow blackish vittae. Abdomen 



blackish with chequered whitish pollinosity conspicuous on intermediate tergites 



WINTHELLIA Crosskey 

 [This genus and T asmaniomyia are not separable on any convincing characters 

 and may need to be synonymized when better known] 



17 Prosternum bare. Facial ridges with strong downcurved setae on more than 



half their height BLEPHARELLA Macquart 



— Prosternum haired or setulose. Facial ridges bare (except for usual very small 



setulae immediately above vibrissae) . . . . . . . . 18 



18 Head with two pairs of reclinate orbital setae (upper one sometimes weak) . . 19 



