352 CONOPIDiE 



275. Conops annulosus, Big. 



Conops annulosus, Bigot, Ann. Soc. Ent. France, (6) vii, p. 36 



(1887). 



S 2 . Head varying from brown to orange-yellow ; vertex and 

 frons generally dark brownish-orange or deep brown ; face with 

 glistening silky golden sheen when viewed from above. Antenn?e 

 wholly black (ist joint dark brown and 3rd joint orange at base 

 in type); a black dot on each side of frons, as in nnheculosus. 

 Proboscis entirely black'. Occiput blackish, witii golden-vellow 

 margins; brownish-orange betiind vertex, and often with a trans- 

 verse band ot: bright golden-yellow dust in the same region. 

 Thorax: dorsum black; humeri and hind corners brownish- 

 orange ; there is a small golden-yellow dust-spot on each side 

 behind the anterior margin and contiguous to the humerus, and 

 the inner hind corners of these spots are more or less quadrate ; 

 the brownish-orange colour of the dorsal posterior corners is con- 

 tinued for a short distance along each side towards the base of the 

 wing. Pleurse more or less blackish, with a little whitish dust 

 present, but not forming a vertical stripe. Scutellum bi-ownish- 

 orange ; metanotum rather shining black, its upper margin 

 appearing gold-dusted when seen from behind. Abdomen black ; 

 in S , 1st segment with somewhat bristly black hair at sides, hind 

 margin indistinctly pale yellowish ; 2nd to 5th segments broadly 

 dusted with bright yellow on hind margins, the bands being 

 variable in width, but generally broadest on 2nd and 3rd seg- 

 ments and more clearly defined there ; 6th segment entirely 

 yellow-dusted, except that it is narrowly black on the anterior 

 margin. In § , the yellow dust-bands are broad and distinct on 

 2nd and 3rd segments, less so on 4tli ; the ground-colour of 2nd, 

 3rd and 4th segments (viewed from behind) is distinctly red, 

 while the golden dust-bands ai'e sometimes visible only in front. 

 Legs bi'ownish-orange ; coxae white-dusted; hind femora a little 

 blackish at base; tibite with a white shimmer; tarsi black, often 

 brownish-orange above at base ; pulvilii and claws orange-yellow, 

 tips of latter black. Pubescence of legs inconspicuous, black, 

 short, bristly. Wings grey ; from costa hindwards to 3rd vein 

 dark brown, the 1st posterior cell also is brown down to an 

 apparent " spurious vein"; halteres bright yellow. 



Length, 10-12 mm. 



Eedescribed from the type S (which is labelled as a $ ) from 

 the Moluccas in the Bigot collection ; three 6 d Jind one 5 from 

 Simla, viii-ix. 1898 {Nurse) ; and a specimen from the Khasi Hills 

 {Sladen), all in the British Museum. In this and one or two 

 allied species there is a fold in the wing, slightly darkened, which 

 produces the same appearances as does the " spurious vein " in 

 Syrphid.e. 



