Vol. 32, pp. 1-4 February 14, 1919 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



ONE NEW GENUS AND TWO NEW SPECIES OF 



ANTHOMYIIDAE FROM THE VICINITY OF 



WASHINGTON, D. C. (DIPTERA). 



BY J. R. MALLOCH. 



The two insect species described in this paper were sent to 

 me for identification over a year ago from the collection of the 

 United States Bureau of Biological Survey at my request for 

 material to assist me in drawing up generic keys to the An- 

 thomyiidae of North America and the descriptions are put 

 forward at this time in order to pave the way for further 

 contributions of a synoptic nature. The types have been re- 

 turned to Washington. 



Macateeia, gen. nov. 



Generic Characters. Female. — Bead oblong in profile, distinctly longer 

 than high; orbits extending farther beyond eyes than height of cheek; 

 frontal orbits with weak bristles, all of which except the upper 3 on each 

 side are directed mesad; interfrontal cruciate bristles well developed; an- 

 tennae shorter than face; arista pubescent; vibrissal angle with numerous 

 hairs and 1 distinct vibrissa on each side; hairs on cheek confined to lower 

 margins; eyes bare, a little higher than long. Thoracic chaetotaxy as in 

 Hylemyia. Abdomen tapered apically; ovipositor chitinized, glossy black, 

 tapered apically, the extreme apex, when seen in profile, with a slightly 

 wedge-shaped excision. Legs rather stout, the femora noticeably so; 

 hind tibia with 2 very short, stout, curved, thorn-like spurs on anterior 

 side at apex. Wing venation as in Hylemyia. 



Type of genus, Macateeia protuberans, sp. n. 



Female. — Black, densely gray pruinose. Head reddish testaceous, 

 densely whitish gray pruinose, occiput dark gray; antennae and arista 

 black; proboscis fuscous; palpi testaceous yellow. Thorax, seen from be- 

 hind, with 3 broad indistinct gray vittae, the larger bristles with dark 

 brown dots at their bases. Abdomen unicolorous gray, with very faint 

 indications of darker dots at bases of bristles. Legs black. Wings slightly 

 yellowish. Calyptra white. Halteres yellow. 



Length of head at base of antennae about one and one-fourth times 



1— PRor. Biot.. Soc. Wash., Vol. 32. 1910 (1> 



