CHALCID FLIES OF GENUS PERILAMPUS — SMULYAN 405 



tured, somewhat more coarsely so laterally; wing hairs usually long 

 and rather dense. 



Abdomen: Posterior face wider than long or about as wdde as 

 long (in males sometimes somewhat longer than wide); first tergite 

 petioliform, without an elevated anterior margin or flange and more 

 or less rugosely sculptured. 



Color: Black; head grayish black or greenish black, the vertex, 

 hyperclypeal area and clypeus sometimes bronzy or brassy; notum 

 of thorax somewhat grayish black, the area along inner margin of 

 parapsides sometimes metallic black (latter sometimes bronzy in 

 the males); abdomen sometimes in part brown or brownish black 

 (usually with a gray reflection in males) ; flagellum of antenna grayish 

 dull dark brown to ferruginous, more or less pale beneath; scape 

 brown to blackish, sometimes with a greenish tinge; legs brown to 

 ferruginous ; coxae and femora blackish with more or less of a greenish 

 tinge and sometimes quite green, the apices of femora usually testa- 

 ceous or reddish; apices of posterior and intermediate tibiae testace- 

 ous or reddish, the anterior pair and sometimes also the intermediate 

 wholly testaceous or reddish except for a more or less distinct darker 

 stripe above; tarsi testaceous or reddish; wings with an infuscated 

 spot or cloud below marginal vein. 



Male. — Length about 1.75-2 mm. Similar to female; frons some- 

 times meeting vertex at somewhat of an angle; front and face 

 sometimes in large part aciculate; cheeks sometimes more or less 

 convexly rounded; head in front view sometimes rather distinctly 

 transverse; eyes sometimes reaching below level of base of clypeus; 

 portion of scape bearing sensorial punctures broadened throughout 

 its whole length and comprising nearly whole length of scape, usually 

 somewhat stouter basally, the inner margin faintly concave in its 

 apical half; sensoria fine to fairly coarse and dense, absent at apex. 



Type. — In the Museum of Public Instruction, Quebec, Canada. I 

 have not seen it. 



Remarks. — Redescribed from eight females and seven males 

 believed to be this species. Eight specimens are in the United 

 States National Museum, six in the collection of the Boston Society 

 of Natural History, and one in the collection of Prof. C. T. Brues, 

 of Harvard University. It is quite likely that my definition of the 

 species, based upon the above 15 specimens, is in some respects 

 too narrow. 



Distribution. — I have seen material from "Canada"; Maine (July, 

 Aug.); Massachusetts (Aug.); New York (Aug.); New Jersey (Aug.); 

 Maryland; District of Columbia; Virginia; Ohio; Louisiana; Kansas. 

 Provancher described the species from Cap Rouge, Quebec. 



Host. — Macrocentrus sp. The species is said to have been reared 

 also from the lepidopteron Epiblema strenuana Walker "in Ambrosia", 

 but was probably a hyperparasite. 



