TACHINIDAE OF ORIENTAL REGION 93 



- Abdominal Ti + 2 excavate to the hind margin. Antennal axis conspicuously 



above mid-eye level, antennae heavy and longer than maximum breadth of the 

 eye. Peristomal setae well developed. Frons of $ broad, width of vertex at 

 least two-thirds that of one eye seen from above. Epistome strongly projecting, 

 o* not of this slender form. Arista micropubescent . . LESKIOLA Mesnil 



[The q* hypopygium is unusually large in relation to the abdomen in this genus 

 and the <J of the type-species, L. palpata, has proclinate orbital setae.] 



10 Scutellum without trace of lateral and apical setae. 2 + 3 dc setae. Abdominal 



Ti -(- 2 n °f excavate to the hind margin . . SOL1ERIA Robineau-Desvoidy 



- Scutellum with lateral and apical setae differentiated (although weak and long 



hair-like). 3 + 3 dc setae. Abdominal Ti -f 2 excavate to or almost to the 



hind margin ....... LESK1A Robineau-Desvoidy 



[L. bezziana Baranov runs here. It differs from L. aurea (Fallen), the type- 

 species, in the nearly complete Ti -) 2 excavation but its placement in Leskia 

 appears justified] 



11 Wing with bend of vein M as far, or almost as far, from wing margin as from m-cu; 



last section of Cu 1 conspicuously longer than m-cu. Cost;'.! spine very long and 

 strong. Setulae of vein W 44 5 extending to beyond r-m. Arista conspicuously 

 thickened on about its basal three-fifths, second segment about three times as 

 long as broad. Abdominal Ti -f 2 without median marginal setae. Proboscis 

 very slender, slightly longer than head height. Basicosta yellow, contrasting 

 with black-brown tegula. Last visible abdominal tergite with some irregular 

 strong discal setae ...... APHRIA Robineau-Desvoidy 



- Wing with bend of vein M much closer to wing margin than to m-cu; last section of 



Cuj conspicuously shorter than m-cu. Costal spine undeveloped. Setulae on 

 vein R i+b not extending beyond r-m. Arista normal, slightly thickened only 

 near base and second segment not elongate. Abdominal Ti -f 2 with a pair of 

 erect median marginal setae. Proboscis not unusually slender, shorter than head 

 height. Both tegula and basicosta black-brown. Last visible abdominal tergite 

 at most with some short stubby setulae, without long strong discals . . . 12 



12 Palpi reduced and filiform, not reaching forwards as far as the epistome. Inner 



vertical setae subparallel. Humeral callus usually with only two Strong setae. 



6" with proclinate orbital setae . . OCYPTEROMIMA Townsend 



- Palpi fully developed, reaching forwards at least as far as the epistome. Inner 



vertical setae cruciate. Humeral callus with three or more strong setae. £ with 



or without proclinate orbital setae . . . . . . . . . 13 



13 Second costal sector bare ventrally. Subapical scutellar setae inserted close to each 



other, distance between their bases not more than that between a subapical seta 

 and its corresponding basal seta; apical scutellar setae absent or extremely weak. 

 $ with a pair of very strong prevertical setae directed outwards over the eyes. <$ 

 with or without proclinate orbital setae. Abdominal Ti + 2 not excavate to 

 its hind margin. Slender forms with rather elongate abdomen 



ATYLOSTOMA Brauer & Bergenstamm 



- Second costal sector haired ventrally. Subapical scutellar setae widely separated, 



distance between their bases usually conspicuously greater than that between a 

 subapical seta and its corresponding basal seta; apical scutellar setae moderately 

 strong, crossed and horizontal. 9 without such prevertical setae (but upper pair of 

 reclinate orbitals may be twisted slightly outwards), o* without proclinate orbital 

 setae. Abdominal Ti + 2 with excavation reaching the hind margin. More 

 robust forms with ovate abdomen . . . THELAIROLESKIA Townsend 



