NO. 2136. REVISION OF THE GENUS ArHYCUS—TIMBERLAKE. 623 



with a moderately thick but fine, short pubescence. Antenna! scape 

 about two and one-fourth times longer than wide, widest across the 

 middle; pedicel as long as the first four funicle joints combined; first 

 four funicle jaints subequal in length and wider than long, the last 

 two considerably longer, the fifth nearly twice as long as the preceding, 

 all joints gradually increasing in width so that the sixth is nearly 

 twice as wide as the first; club oval, obliquely rounded at apex, one- 

 third wider than the preceding joint and about as long as the last 

 five funicle joints combined. Wings uniformly ciliated; oblique 

 hairless streak narrowed above and interrupted below, the cut-off 

 portion more or less connecting mth a branch of the basal hairless 

 streak. Length: 0.7 to 0.9 mm. 



Front, vertex and mesonotum orange yellow; face and cheeks paler 

 yellow, the latter with a large blackish brown blotch next to the 

 mandibles and connecting with the dark coloration of the occiput; 

 tegulae and underparts sordid yellowish white, the former with a 

 brovvii spot on the posterior margin and the venter of abdomen dusky 

 in the middle ; collar of pronotum whitish with a blackish bro^vn dot 

 on each corner; concealed part of occiput and pronotum, the metano- 

 tum, propodeum and dorsum of abdomen blackish brown, the latter 

 f admg to yellowish white on the sides behind the vibrissae. Anteimal 

 scape black with base, apex and a narrow hne on dorsal margin yellow- 

 ish white; base of pedicel, fhst thi'ee or four funicle joints and club 

 blackish; rest of antenna yellowish white. Legs pale yellowish wliite, 

 the tibiae with two narrow, interrupted blackish brown annuli nearly 

 obsolete on the front pair, and the last joint of the tarsi tipped with 

 blackish. Wings hyahnc, the veins pale brownish. 



Male. — Not known. It is probable, however, that oregonensis will 

 prove to be the male of this species. 



Redescribed from two females (cotypes) reared from a Lecanium 

 on Adenostoma fasiculatum, Alameda County, Cahfornia, June, 1887 

 (A. Koobclc), Koebele's No. 252"; and two females reared from 

 Lecanium corni Bouche, Santa Rosa, California, June 15, 1908 (E. M. 

 Ehrhorn). The following Eastern specimens hardly differ and must 

 be considered to belong here, at least untU the species is better known 

 from larger series: One female, Oakland, Maryland, Jul}'- 12; and one 

 female reared from Lecanium nigrofasciatum Pergande, Harrisburg, 

 Pennsylvania, October 22, 1909 (P. R. Myers), Myers' No. 269. 



Type.— Cat. No. 5043, U.S.N.M. 



