CHALCID FLIES OF GENUS PERILAMPUS — SMULYAN 381 



hyperclypeal area, usually more or less conspicuously punctate, its 

 anterior margin medially faintly arcuate and its basal margin some- 

 times markedly arcuate; face on each side immediately above rugose 

 area usually conspicuously punctate; cheeks convexly rounded; head 

 in front view usually distinctly transverse, eyes reaching to or below 

 level of base of clypeus (the latter condition usually especially marked 

 in the males). 



Thorax: Scutellum, as a rule, of same length or only slightly 

 longer than mesoscutmn and prothorax together; area along inner 

 margin of parapsides more or less roughened with punctures or 

 aciculations or with both, the punctures usually shallow; suture 

 separating prepectus from pronotum verj^ distinct; axilla with an 

 elongate fingerlike extension running posteriorly along lateral margin 

 of scutellum, the base of this extension falling distinctly below middle 

 of axilla; face of axilla more or less excavated immediately above 

 base of extension, the portion immediately anterior to extension not 

 sloping toward latter; surface of axilla usually smooth or nearly 

 smooth and shining, but with more or less conspicuous rugae imme- 

 diately above base of extension; basal shallow furrows on underside 

 of apex of scutellum turning caudad medially; propodeum laterally 

 impressed and rugose; upper surface of scutellum rarely with a 

 smooth median longitudinal line; wing veins usually long, postmar- 

 ginal vein occupying about one-fifth to one-fourth the distance 

 between the end of the marginal vein and the apex of the wing in 

 a straight line and about two-thirds to three-fourths the length of 

 marginal vein; wing hairs moderately to quite dense. 



Abdomen: Posterior face usually wider than long, rarely longer 

 than wide (more often so in the males); first tergite very strongly 

 transverse and smooth or practically smooth and with no elevated 

 anterior margin; hair punctures on second segment usually minute. 



Color: Head green, blue, violaceous, or in some instances mostly 

 blackish; vertex often brown or blackish and rarely brassy, front 

 laterad of carina and the h3^perclypeal area sometimes more or less 

 brassy; flagellum of antenna grayish black to dark brown with tip 

 and occasionally the whole underside reddish or brownish; scape more 

 or less concolorous with head; thorax green, blue-green, blue, bluish 

 black, or violaceous, very rarely with a brassy reflection; area along 

 inner margin of parapsides often wholly or in part black or blackish 

 and propodeum sometimes black, the median lobe of mesoscutum 

 occasionally bronzy or cupreous; abdomen greenish, greenish viola- 

 ceous, violaceous, or black, the green or blue-green reflection varying 

 in strength and usually stronger on underside; legs (outer faces at 

 least) more or less concolorous with head and thorax although some- 

 times more distinctly green; anterior tibiae largely testaceous or 

 brownish except a stripe above; intermediate tibiae sometimes largely 



