TWO GENERA OF CHALCID-FLIES GAHAN 345 



3. ARACHNOPHAGA LONGICEPS (Brues), new combination 



Anastatus longiceps Brues, Wisconsin Nat. Hist. Soc. Bull. 5, p. 108, 1907. 



The female agrees very closely with the description of kirtibasis on 

 another page of this paper but may be distinguished at once by the 

 shorter and less conspicuous hirsute covering of the mesonotum, by the 

 uniform ciliation of the basal area of the forewing behind the sub- 

 marginal vein, and by the fact that the head ar^d tliorax are mostly 

 brownish testaceous, the abdomen mostly blackish but marked with 

 testaceous basally above and on the sides. 



Male. — Length 2.5 mm. Vertex, frons above and laterad of scrobe, 

 area between antennal fossae, and posterior portion of temples and 

 cheeks dark green or tinted with green ; scrobal depression, face below 

 antennae, cheeks adjacent to malar furrow, posterior orbits narrowly, 

 and upper part of occiput yellowish testaceous; apices of mandibles 

 and the rest of mouthparts more or less fuscous ; antennal scape tes- 

 taceous, flagellum dark brown to blackish ; thorax above dull greenish 

 black with the region around base of wings more or less yellowish; 

 thorax beneath largely yellowish, the mesopleura, mesosternum, and 

 metapleura more or less aeneous; propocleum dark brown; legs 

 brownish testaceous with the anterior pair not quite so dark as the 

 posterior pair; wings hyaline, venation yellowish; abdomen brownish 

 black, paler at base above and beneath. 



Head viewed from above strongly transverse, shallowly concave 

 behind, almost perpendicularly truncate behind vertex; lateral ocellus 

 very slightly less than its own diameter in front of the sharp 

 posterior margin of head and about half its own diameter from the 

 eye margin; postocellar line twice as long as the line from lateral 

 ocellus to median ocellus; anterior margin of frons not forming a 

 .sharp ledge; malar space equal to a little more than half the vertical 

 length of eye; eye distinctly pubescent; antennae inserted distinctly 

 below eyes ; scape distinctly though not greatly thickened beyond the 

 middle, attaining the level of anterior ocellus; pedicel a little more 

 than twice as long as broad ; ring joint broader than long; first funicu- 

 lar segment about as long as pedicel, and about twice as long as broad ; 

 last segment of f unicle subquadrate ; club a little longer than two pre- 

 ceding funicular segments, obliquely truncate. Mesoscutum convex, 

 with fine, close sctdpture; parapsidal grooves complete but shallow; 

 scutellum a little more finely sculptured than mesoscutum; axillae 

 narrowly separated and sculptured dorsally about like mesoscutum; 

 propodeum with shallow but distinct reticulate sculpture and a deli- 

 cate median carina, bare medially, densely hairy at posterior lateral 

 angles. Anterior femur distinctly swollen; basitarsus of middle leg 

 not at all thickened, the calcarium moderately thick and about two- 

 thirds as long as basitarsus; posterior femur moderately broad, and 



