CHALCID FLIES OF GENUS PERILAMPUS — SMULYAN 395 



elevated and truncate or only slightly convex, and only partially 

 masking posterior aspect of neck of propodeum. 



Color: Hanging from distinctly metallic to nearly black; head dark 

 metallic green to nearly black, sometimes with a cupreous tinge above ; 

 flagellum of antenna grayish black to entirely pale ferruginous, 

 frequently with the apex and under side paler than the rest; scape 

 usually concolorous with head; dorsum of thorax dark green, 

 greenish, or bluish, sometimes with a cupreous or bronzy cast and 

 rarely quite dark or blackish, the areas along inner margins of parap- 

 sides usually distinctly metalUc green but occasionally nearly black; 

 abdomen black or black with greenish reflections, sometimes dis- 

 tinctly green; legs dark brown or blackish, the hind femora some- 

 times and more rarely all of the femora as well as the hind tibiae 

 with greenish or bluish reflections ; anterior tibiae testaceous or reddish 

 testaceous, sometimes with a dark stripe above; tips of intermediate 

 and hind tibiae usually testaceous, the latter often so at base; tarsi 

 testaceous or reddish testaceous; wings hyaline, veins testaceous to 

 brown. 



Male. — Length about 1.5-2.5 mm. Similar to female; front 

 between eye and scrobal cavity usually more strongly wrinkled and 

 emargination of frontovertex usually more sharply pronounced; part 

 of scape bearing sensorial punctures variable, slightl}^ to very dis- 

 tinctly broadened apically and occupying from somewhat over one- 

 third to two-thirds of scape, sensoria very fine to moderately coarse. 



2Vpe.— U.S.N.M. no. 20822. 



The type of laevlcephalus is in the same collection. 



Redescribed from a large series of specimens of both sexes, including 

 types, allotypes, and paratypes. 



Distribution. — Widely distributed. I have seen material from 

 "Canada" and the District of Columbia (Sept., Oct.), and from the 

 following States: Maine (July, Aug.); New Hampshire; Vermont 

 (June); Massachusetts (July, Aug.); Rhode Island (June); New York; 

 New Jersey (Aug.); Pennsylvania; Maryland; Virginia (Aug., Oct.); 

 North Carolina (Aug., Sept.); South Carolina (Sept.); Michigan; 

 Indiana (July); Alabama; Wisconsin (July); Illinois; Mississippi 

 (Aug.); South Dakota; Kansas (Sept.); Oldahoma (April, Sept. "on 

 Ewpatorium serotinum") ; Texas (May, July, Aug.); Montana (Aug.); 

 Wj^oming (July); Colorado (Sept.); Idaho (Aug.); Nevada (July); 

 Washington (May, July); Oregon; California (Sept.). 



Hosts. — Chrysopa spp. One of these is Chrysopa calif ornica Co- 

 quillett; another record reads "Ex Chrysopa cocoon collected on 

 cotton." According to Essig,'^ the species is also a primary parasite 

 of Sympherohius angustus (Banks), the slender brown lace wing, and 

 related species in California. 



13 Insects of western North America, p. 849, 1926. 



