28 R. W. CROSSKEY 



Key to Oriental Species of CYLINDROMYIA Meigen 



i Propleuron bare ............ 2 



- Propleuron haired .... hirtipleura Malloch & orientalis Townsend 



[These two nominal species are known from very little material; the genitalia 

 have not been compared but it appears that they may be synonymous.] 



2 Hind tibia with a submedian pv seta (sometimes accompanied by a second smaller 



pv seta) ............. 3 



- Hind tibia without a submedian pv seta ........ 8 



3 Legs with bright reddish yellow femora and tibiae. Vibrissae very weak, hardly 



differentiated from the peristomal setulae, inserted on a level with the epistomal 

 margin. Bend of vein M sharply angled and sometimes with M 2 appendix, section 

 of M between the bend and R i + 5 slightly to moderately strongly sinuous. Scutellum 

 with three pairs of setae (basals present) ...... rufipes Meigen 



- Legs unicolorous black or brownish black. Vibrissae strong, very much larger than 



the peristomal setulae, inserted above the level of the epistomal margin (only 

 weakly so in umbripennis) . Bend of vein M very strongly curved but not sharply 

 angled, without M 2 appendix, section of M between the bend and R i+b straight or 

 at most very weakly wavy. Scutellum with two or three pairs of setae. . . 4 



4 Scutellum with two pairs of setae (basal setae absent) ..... 5 



- Scutellum with three pairs of setae (basal setae present) ..... 6 



5 ^ abdomen almost entirely blackish, at most the sides of Ti +2 and T3 paler tawny 



or reddish. <J sternite 5 with a pair of very short blunt median processes (very 

 inconspicuous in situ). Usually one stpl seta, occasionally one on one side and two 

 the other, or two on both sides. Head pollinosity usually silvery grey, sometimes 

 weakly yellowish ......... umbripennis Wulp 



- o* abdomen almost entirely bright reddish orange on the sides of Ti + 2 and T3. <$ 



sternite 5 with a pair of long narrow median processes (very conspicuous in situ). 



Two stpl setae. Head pollinosity pale yellow to golden . . ? Undescribed sp. 



6 Abdomen orange-red on most of Ti + 2 and T3 and anteroventrally on T4, black 



apically and on a broad median vitta basally ....... 7 



- Abdomen almost entirely black ....... munita Townsend 



7 o* sternite 5 with a deep U-shaped median apical notch . . . Undescribed sp. 



[Species from northern India exactly like luciflua on externals but with differently 

 shaped o* hypopygial processes and sternite 5.] 



- (J sternite 5 with a shallow V-shaped median apical notch . luciflua Villeneuve 



8 Vibrissae absent or hair-like. Facial profile nearly straight, the epistome only very 



weakly prominent. Antennae very long, almost reaching level of the epistome. 

 Legs reddish yellow with the apices of the tarsi dark. Abdominal T3 without long 

 setae at the posteroventral corners ......... 9 



- Vibrissae strong. Facial profile concave saddle-like medially. Antennae short, 



falling far short of the epistome. Legs black or brownish black with the apices of 

 the tarsi reddish yellow. Abdominal T3 with some long setae at the posteroventral 

 corners ......... fuscipennis Wiedemann 



9 Thoracic ground colour entirely black or brownish black. Apical scutellar setae 



strong. Two supra-alar setae. Post dc setae all well developed. Mid tibia with 



two ad setae ......... evibrissata Townsend 



- Thoracic ground colour red or reddish yellow on pleural regions, humeral calli, meso- 



notal margins and scutellum (only the disc of the mesonotum blackish). Apical 

 scutellar setae hair-like. One supra-alar seta. Post dc setae almost hair-like except 

 for the hindmost pair. Mid tibia with one ad seta or if with two then the proximal 

 one minute ........ wiedemanni Crosskey nom. n. 



