TACHINIDAE OF ORIENTAL REGION 29 



Key to Oriental Species of LOPHOSIA Meigen 

 [Note. The single European species of the genus is included.] 



Metapleuron with a tuft of hairs immediately above the base of the hind coxa. 

 Abdominal Ti + 2 and T3 without median marginal setae. Very large species, 

 length about 18 mm ..... felderi Brauer & Bergenstamm 



Metapleuron bare above the base of the hind coxa. Abdominal Ti -|- 2 and T3 

 each with a pair of erect median marginal setae (sometimes small, very rarely 

 missing or set forwards in discal position on Ti + 2). Smaller species, length not 

 exceeding 165 mm ........... 2 



Thorax entirely reddish orange. Abdomen shining violaceous-black with a belt of 

 thick white pollinosity occupying most of T4 and with similar thick whitish 

 pollinosity on the sides of the basal half of T3. One supra-alar seta and three stpl 

 setae ........... exquisita Malloch 



[Only the holotype is known of this beautiful species. Two supra-alar setae 

 would be expected for this species on total facies, and the single sa on the 

 holotype might be atypical.] 



Thorax with black ground colour or at least extensively blackish brown on the 

 mesonotum. Abdomen not so. If only one supra-alar seta then fewer than three 

 stpl setae ............. 3 



One supra-alar seta. ........... 4 



Two supra-alar setae ........... 10 



One post ia seta ............ 5 



Two post ia setae ............ 6 



Legs blackish brown. One prst dc seta. Acrostichal setae absent (o -f- o). Post- 

 humeral seta absent. Hind tibia with one ad and one pd seta. Basal scutellar 

 setae absent ......... hamulata Villeneuve 



Legs reddish yellow (tarsi slightly darkened). Three prst dc setae. One acrostichal 

 seta (o + 1). Posthumeral seta present. Hind tibia with two ad and two pd 

 setae. Basal scutellar setae present (but weak) . perpendicularis Villeneuve 



Mid tibia with two ad setae. Acrostichal setae well differentiated both presuturally 

 and postsuturally (usually at least 2 + 3). Hind tibia with two ad and two pd 

 setae. Usually three stpl setae (fewer in occasional specimen). Humeral callus 

 with three setae in a triangular arrangement (innermost one weak). [Medium- 

 sized black species with black legs] . . itnbuta Wiedemann (some specimens) 



Mid tibia with one ad seta. Acrostichal setae absent presuturally and sometimes 

 postsuturally, at most only two differentiated postsuturally. Hind tibia rarely 

 with two ad and two pd setae, usually with one of each. Not more than two stpl 

 setae. Humeral callus with two setae or if (occasionally) a very weak third 

 humeral seta distinguishable then this standing about in line with the main two . 7 



Head without proclinate orbital setae. Femora and tibiae reddish yellow . . 8 



Head with a pair of small proclinate orbital setae. Femora and at least the basal 



parts of the tibiae black or blackish brown ....... 9 



Petiole of cell i? 5 very long (nearly as long as the second costal sector and at least 

 three times as long as r-m). Third antennal segment of o" n °t conspicuously 

 widening apically and its anterior margin nearly straight. Exceptionally small 

 species, length about 6 mm ........ erythropa Bezzi 



[Only the holotype is known but erythropa and lophosioides, also known from 

 very little material, appear to be distinct.] 



Petiole of cell R b short (very much shorter than the second costal sector and at most 

 only slightly longer than r-m). Third antennal segment of o* conspicuously 

 widening apically and its anterior margin distinctly concave. Larger species, 

 length about 8 mm ....... lophosioides Townsend 



Wing cell R b short-petiolate. Scutellum without basal setae. Third antennal 



