u-^«- 



162 The Ohio Journal of Science [Vol. XIX, No. 2, 



Laphria felis Osten Sacken. 



Lampria felis Osten Sacken. Bui. U. S. Geol. and Geogr. Survey Terr. 3, 

 1877, p. 286. (Webber Lake, Sierra Nevada, Calif.) 



Laphria felis Williston. Trans. Am. Ent. Soc. 12, 1885, p. 54. 



Laphria Xanthippe Williston. Trans. Am. Ent. Soc. 11, 1884, pp. 31-32. (Mt. 

 Hood, Ore.) 



Williston (loc. prim, cit.) first included Lampria felis Osten 

 Sacken under Laphria, noting that the femora do not show the 

 tubercles characteristic of that genus. Mr. Nathan Banks 

 has kindly corroborated this information by examination of 

 the type. L. Xanthippe Williston differs from L. felis only 

 in variable color characters. 



The principal variations in color are specified in the sub- 

 joined key to the varieties. A general characterization is: 



Mystax black (yellow in var. crocea), beard and coxal hair white 

 in male, grayish to black in female, decumbent pile at sides of face 

 silvery. Inner margin of orbits and oblique fascia on front of thorax 

 silvery or gray pollinose. Short sparse hair on disk of thorax and scutel- 

 lum appearing light golden in some lights, blackish in others. First 

 two segments of abdomen and most of third, black, with white pile, 

 longer on sides near base; remainder of abdomen except sides of some 

 segments yellow to red-brown. This color is pale in males and the pile 

 is golden; duller in females with the pile black. The bristles of thorax 

 and vestiture of legs, except the usual velvety golden pile on inner face 

 of front ones, are black. Wings smoky even to base; interior of some 

 cells clearer. Hypopygium yellowish or reddish with black hairs; 

 forceps curved as seen from above ; inner apical process a little longer and 

 more pointed than in L. sadales and recurrent further along inner margin 

 of forceps; slightly separated from forceps as seen from side and more 

 or less decurved at tip. (Figs 14, 15). Length 13-18 mm. 



Key to Color Varieties. 

 a. Mystax black. 



b. Legs entirely black var. atripes n. var. 



bb. Legs not entirely black. 

 c. Legs not entirely reddish. 



d. Hind femora reddish below var. Xanthippe Williston. 



dd. Hind femora entirely reddish; others reddish below, .var. varipes n. var. 



cc. Legs entirely reddish var. felis Osten vSacken. 



aa. Mystax yellow to golden; legs entirely yellowish to reddish, var. crocea n. var. 



Laphria felis var. atripes new variety. 



Type a female from Jenny Creek, Tolland, Colo.. July 27, 

 1917, E. C. Jackson, (U. S. N. M.). 



Laphria felis var. Xanthippe Williston. 



Mt. Hood, Ore., H. K. Morrison, (U. S. N. M.). 



Hope Mts., B. C, July 24, 1906, R. V. Harvey, (Hine). 



