Dec, 1918] Nearctic Species of the Genus Laphria 157 



Laphria ventralis Williston. 



Laphria ventralis Williston, S. W. On the North American Asilickc (Part 2). 

 Trans. Am. Ent. Soc. 12, 1885, p. 55. (California.) 



Mystax with only a few black bristles; remainder of mystax, facial 

 pile, beard, coxal hair, thoracic fringes, pile and bristles of scutellum, 

 and pile of abdomen light golden. On the sides of each segment from 

 3 to 7 the integument itself is ferruginous; posteriorly these spots are 

 connected across hind margins of segments. The pile of abdomen is so 

 arranged that viewed from above it appears most dense on sides and 

 posterior parts of segments. Short, sparse, rather erect hair of thoracic 

 disk pale golden, but in some lights appearing dark. Hair of legs 

 mostly dark above, pale golden beneath. Wings smoky, veins reddish. 

 Length, 18-20 mm. 



In the male the mystax is wholh^ pale; and it as well as some of the 

 remaining vestiture of the body, particularly the thoracic fringes, 

 have a more ardent reddish gold color. The pile of thoracic disk is 

 longer and more highl}' colored. The hypopygium is ferruginous with 

 its various processes black. Lamellae well solidified, median somewhat 

 narrowed toward apex; inner much narrowed; both slightly upturned 

 apically. (Fig. 9). 



Specimens examined: Shasta District, Calif., July 1875, 

 (M. C. Z.); Siskiyou, Calif., Aug. 7, (U. S. N. M.); Western 

 Washington Territory, H. K. Morrison, (U. S. N. M.); Olympia, 

 Wash.-, Sept. 24, Kincaid, (111. State Lab.) 



Laphria coquillettii new species. 



Mystax and beard, pale golden in male; mixed black and pale golden 

 in female. Hairs of occiput, upper pleurte, and copious short black, 

 nearly erect pile of anterior half of thorax black. Tuft of hair in front 

 of halteres, scutellar bristles and coxal hair, pale golden. Posterior half 

 of thorax and scutellum densely covered .with long, recumbent golden 

 hair. Ground color of first two and most of the third segment of 

 abdomen black, semi-erect pubescence pale golden; of remainder of 

 abdomen ferruginous to chestnut brown, pile more dense and recumbent, 

 golden to red gold in color. Legs with mixed black and very pale golden 

 hairs. Wings smoky, somewhat lighter toward base. Hypopygium 

 ferruginous, process black; much like that of ventralis. (Fig. 10). 

 Length 15-20 mm. 



Type a male, Los Angeles Co., Calif., Coquillett, (U. S. 

 N. M.). Allotype and paratype males, Switzers' Trail, 3,500 

 feet, San Gabriel Mts., Calif., June 11, 1910, F. Grinnell, 

 (Hine). 



Named in honor of the collector, the late D. W. Coquillett, 

 an entomologist who contributed to knowledge of the Asilidae, 

 and did much good work among Diptera in general. 



