330 



Psocus frontalis Harr. MSS. [P. striatus Walk.] 



Yellowish white, spotted with black; front with black stria;; wings hya- 

 line, upper ones with a large, opaque, carpal spot, half white and half 

 black, the inner margin at base, and a spot on the middle of the edge, black. 

 Antenna; pilose, black. Length to tip of the closed wings, $ .20 in.; 

 9 .25 in. 



Body yellowish white above. Head with small black spots, or abbrevi- 

 ated lines on the vertex; region of the ocelli black; front lineated with 

 black, mouth and tips of the palpi blackish; antenna; fuscous, rather longer 

 than the wings, pilose, first and second joints whitish. Thorax black, with 

 a narrow, dorsal, yellowish line, which is continued on the metathorax, be- 

 tween the base of the wings; pleura (sides of the thorax) with about four 

 whitish spots on each side. Wings hyaline, slightly perlaceous, the superior 

 ones with a large, opaque carpal spot, the posterior part of which is black, 

 and the anterior part white, terminating before in a black point; another 

 black spot on the middle of the inner margin, which is also black at the 

 base of the wing; in the females there are two or three contiguous spots, 

 forming an abbreviated, oblique band before the middle of the wing. Ab- 

 domen yellow above, white, holosericeous beneath, black at tip, with a dor- 

 sal series of black triangles, and two lateral series on each side of abbre- 

 viated, transverse, black lines. Legs pale; tip of the thighs above, and 

 tarsi fuscous. 



This species is somewhat like P. lucidus, but it is a smaller and less 

 robust species, and the different markings of the head and thorax will not 

 permit us to confound them. There are white nervures on the superior 

 wings like those of lucidus, and of some other species. 



Var. yellowish white, spotted with black; vertex spotted, and front lin- 

 eated with black; wings hyaline, upper one with a large, opaque, black and 

 white carpal spot, an oblique, interrupted band before the middle, a spot 

 on the inner margin, and two or three obsolete spots on the disk, black. A 

 spot on the vertex and region of the ocelli black; front lineated with black, 

 upper wings with the carpal spot, as in the preceding, black and white; a 

 spot on the inner margin nearer the base, and an interrupted, oblique band 

 uniting with this spot, black; a spot in the central areole, and between 

 the band and base two or three irregular spots pale fuscous and nearly 

 obsolete. 



This might, perhaps, be taken for a distinct species, but it is only a vari- 

 ety of frontalis, from which it differs in having the oblique macular band, 

 and in wanting the blackish color on the inner edge of the win"- at base, 



o o o 



and in the addition of a black spot on the vertex. It is also rather larger 

 than die species. 



