382 coKOPiDiE. 



Genus OCCEMYIA, Roh.-Desv. 



Occemyia, Robineau-Uesvoid}', Dipt, en v. Paris, Myop. p. 50 



(185:3). 

 Melanofioma, Ilobineau-Desvoidv, op. cit. p. 44 (1853). 

 Oncoynyiu, Loew, Berlin, ent. Zeitsclir. x, p. 41, no. 73, nota (1866). 

 ThecopJiora, Roiidani, Dipt. Itai. Prod, ii, p. 235 (1857). 



Genotype, Myopa atra, Fabr. ; by designation of Coquillett 

 (1910). 



Head hai-dly broader than thorax, loosely attached. Epistome 

 somewhat receding; in middle and at sides impressed, projecting 

 distinctly below level of eyes ; cheeks short, always shorter than 

 the longer diameter of the eyes ; eyes wide apart in both sexes, 

 bare ; ocelli present ; proboscis thin, extremely long, bent at 

 base and in middle, horizontal, prominent, slightly bristly, with 

 very small labella ; palpi short, cylindrical, bristly ; antennae elon- 

 gate, porrect, with first two joints bristly ; 1st joint short, 2nd 

 and 3rd generally at an angle with the 1st, distinctly elongate, 

 spatnlate; 3rd as long as, or shorter than, 2iid, oval, bare, with 

 a stvle-like dorsal arista. Thorax snbquadrate with rounded 

 corners ; scutellum semicircular. Abdomen elongate, at base 

 moderately narrowed, curved, arched on upper side, flat below. 

 Genitalia in S barely prominent, genital shield in $ large and 

 • distinct. Legs of moderate size and length, femora slightly 

 thickened, hind pair slightly longer than the others, finely bristly. 

 Wings with venation of the type normal in ConopiBjE ; 1st pos- 

 terior cell always open; anal cell nearly reaching margin, witli 

 long petiole. 



Range. Europe, North America and the Orient. 



Life - hist org un k' n o w n . 



The iniagos are compact, grey, little flies, and nearly bare. They 

 are found on flowers and bushes. 



The two Indian species may be distinguished by the colour 

 ■ of the legs, which are mainly black in atra and yellowish in 

 Jlavipes. 



302. Occemyia atra, Fabr* 



Myopa atra, Fabricius, Spec. Ins. ii, p. 469 (1781). 

 Occemyia atra, llobineau-Desvoidy, Dipt. env. Paris, Mj'^op. p. 58 

 (1853). 



cJ 5 . Black, covered with ash-grey dust. Upper part of Irons 

 blackish, lower part orange, the two colours blended in the 

 middle ; face and cheeks yellowish or yellowish-white ; occiput 

 shininf black, with grey dust except on upper part; the stiff hairs 

 on the head all black, longest on upper part of frons and vertex. 



* For a full bibliography and the mnnerous synonyms of this species, see 

 Becker in Kertesz, Kat. Palaarkt. Dipt, iv, p. 2G8 (1905). 



