n6 R. W. CROSSKEY 



15 Abdominal Ti + 2 with excavation reaching nearly to the bases of the median 



marginal setae. Abdominal T3 and T4 with discal setae. $ with subparallel 

 inner vertical setae. Mid tibial ad seta present in both sexes. [Forms with 

 conspicuous black-and-yellow pattern formed by pale yellow to golden fasciae on 

 mesonotum and abdomen sharply contrasting with black ground colour] 



TRIGONOSPILA Pokorny 



- Abdominal Ti + 2 with excavation confined to its basal half or less. Abdominal 



T3 and T4 without discal setae (except in £ of Eophyllophila). $ with cruciate 

 inner vertical setae. Mid tibial ad seta always present in $ but often absent in g. 

 [Forms without such pattern] ......... 16 



16 One sternopleural seta (o 4- 1). Presutural seta displaced inwards and standing 



very close to the prst dc setae. Abdominal T5 of o* sharply contracted near the 

 base and produced into an attenuate 'tail' that is as long as T4 or almost so (Text- 

 fig. 112). Mesopleuron with an extremely strong seta standing slightly down- 

 wards and forwards on the mesopleuron from the lower end of the mesopleural 

 row [this seta present in all specimens seen and appearing to be due to a freak 

 upwards displacement of the missing anterior sternopleural seta]. [$ unknown] 



UROEUANTHA Townsend 



- Two or three sternopleural setae (1 + 1 or 2 + 1). Presutural seta in its normal 



position. Abdominal T5 of o* with or without an attenuate 'tail'. Mesopleuron 

 without an exceptional strong seta standing forwards from the lower end of the 

 mesopleural row ........... 17 



17 Arista with very long plumosity, the hairs of each side about as long as the width of 



the third antennal segment. Scutellum with strong lateral setae that are larger 

 than the basal setae. (J abdomen with discal setae on T3-T5. Prosternum with 

 one or more minute hairs on each side (bare in occasional specimen). Prescutal 

 pattern consisting of three broad black vittae separated by two parallel-sided 

 silvery dorsocentral vittae, all black vittae reaching to the transverse suture 



EOPHYLLOPHILA Townsend 



- Arista with short plumosity, the hairs of each side not nearly as long as the width of 



the third antennal segment. Scutellum without or with very weak lateral setae 

 (in latter case much shorter than basal setae), o* abdomen without discal setae 

 (except occasionally for very weak discals on T5). Prosternum bare. Prescutal 

 pattern consisting of four small black vittae, which may coalesce anteriorly and 

 in which the outer pair do not reach the transverse suture. UROMEDINA Townsend 



18 Mid tibia with one submedian ad seta. Fore tibia with one pv seta. Abdominal T3 



and T4 with discal setae. Humeral callus with three setae standing in a triangle . 19 



- Mid tibia with two strong ad setae. Fore tibia with two pv setae. Abdominal T3 



and T4 with or without discal setae. Humeral setae varied .... 20 



19 Mid tibia without a submedian v seta. Apical scutellar setae absent. [$ unknown] 



'Gymnostylia' javana Wulp (? gen. n.) 



- Mid tibia with a submedian v seta. Apical scutellar setae present, very small and 



crossed ..... ' Hemidegeeria' villeneuvei Baranov (? gen. n.) 



20 Abdominal T3-T5 without discal setae. Humeral setae standing in a triangle. 



Abdominal T5 of o* largely covered on each side with a nap of short very fine close 



set hairing HYGIELLA Mesnil 



- Abdominal T3-T5 with discal setae. Humeral callus with the three main setae 



standing more or less in line. $ abdomen without such specialized hairing on T5. 



[$ unknown] .... ' Euthelairosoma' siamense Baranov (? gen. n.) 



Alternative Key to Oriental Genera of BLONDELIINI 



The following key is given to serve as a cross-check against the foregoing key but should not 

 be used in substitution for it. This alternative key uses single-character couplets only, and 



