TWO GENERA OF TRYPETIDAE—MALLOCH 17 
TRYPANEA CALIFORNICA, new species 
Male and female—Very similar to actinobola, the wing pattern 
being almost identical, with the exception that the dark streak 
through the stigma is much less distinct. 
The much longer and stronger frontal bristles, especially the ocel- 
lar pair that reaches the bases of the upper infraorbital pair, readily 
distinguish the male from that of the other species. There are one 
or two short stiff hairs at the base of the third vein on its underside. 
Length, 2.5 mm. 
Type male, allotype, and 2 paratypes, Emerald River, Tahoe, Calif., 
June 30, 1927 (Aldrich), U.S.N.M. No. 54899. 
TRYPANEA MICROSETULOSA, new species 
Male.—Agrees very closely with californica but has a widely spaced 
series of microscopic stiff hairs on the underside of the third wing 
vein from base to a little beyond the inner cross vein. 
Length, 2.75 mm. 
Holotype, Lakeside, Tahoe, Calif. (Aldrich), U.S.N.M. No. 54400. 
TRYPANEA OCCIDENTALIS (Adams) 
1904. Urellia occidentalis Apams, Kansas Univ. Sci. Bull., vol. 2, pp. 480, 
452-453. 
This species is unknown to me except from the description. It 
was described from both sexes. The male has the Y-shaped black 
mark on the wing developed; there are two black rays or fasciae 
through the apical half of the discal cell, the inner one connected 
with a dark border along the fifth vein to the base of the discal cell. 
I have found this marking present in only femoralis Thomson of 
this group, but in it the Y-shaped black apical wing mark is absent 
in the male, and the ray from the stigma to the inner cross vein is 
not so wide as the first posterior cell. There are several species that 
have two dark rays through the apical half of the discal cell, but 
none of this group known to me appears to be occidentalis. 
TRYPANEA WHEELERI Curran 
1932. Trypanea wheeleri Curran, Amer. Mus. Nov., No. 556, p. 7, fig. 1. 
This species was described from females only and is very similar 
to jonest, being distinguished therefrom only by having a narrow 
brown mark across the apex of the anterior basal cell of the wing 
against the inner cross vein. Curran’s figure shows this brown mark 
as extremely narrow, there being very little difference between the 
figures of the wings of the two species. 
Type locality, San Diego County, Calif. 
