ART. 15«. REVISION OF SUBFAMILY PLATYGASTERINAE — FOUTS. 9 



metanotwn laminate; propodeum not visible from above, perpendicular , 

 without median carinoe; abdomen short and broad, not longer than 

 the thorax, composed of six segments in the female and of seven in 

 the male: second tergite striate basally, with two lateral basal foveas; 

 legs slender, with five-jointed tarsi; wings hyaline, pubescent, with 

 long marginal cilia. 



1. AMITUS ALEURODINIS Haldeman. 



Amitus aleurodinis Haldeman, Amer. Joiirn. Sci., ser. 2, vol. 9, 1850, p. 110. 

 Elaptus aleurodis Forbes, 14th III. Rep., 1884, p. 110, pi. 2, fig. 6; female. 

 Alaptus aleurodis Forbes, Cresson, Syn. N. Amer. Hym., 1887, p. 250. 



Head twice as wide as long, as wide as the thorax, slightly emarg- 

 inate posteriori}', entirely finely reticulate; thorax scarcely longer 

 than wide, mostly finely reticulate; notauli complete, separated 

 behind, diverging widely anteriorly; scutellum convex, bare, faintly 

 reticulate, its apex extending posterior to the apex of the propodeum, 

 the latter visible only as a transverse line, narrower than the meta- 

 notum; legs moderately slender, mostly rufous like the rest of the 

 body; tarsi a little paler, dirty yellow in color; wings one-fourth of 

 their own length longer than the entire insect, broad, with long cilia 

 marginally. 



Female. — Length 0.84 mm. Pedicel as long as but thicker than the 

 third antennal joint, as wide as the fifth, two and one-half times as 

 long as wide; joint four slender, about as long as but thicker than 

 the third, slightly narrower than the fifth; joint five twice as long as 

 wide, a little shorter than the fourth, slightly longer and narrower 

 than the sixth; seventh scarcely longer than wide, wider than the 

 sixth; joints eight to ten forming a solid club more than three times 

 as long as wide, the parts of which can be distinguished only under 

 the higher powers of the microscope; club not much wider than joint 

 seven, acute apically, without distinct pubescence; abdomen circular 

 seen from above, pointed apically, a little wider than the thorax ; 

 second tergite reticulate with shallow striae, the striae nearly reach- 

 ing the posterior margin of the segment; second tergite three-fourths 

 as long as wide ; following segments short, broadly transverse, unsculp- 

 tured; sixth tergite triangular, transverse, acute at apex; antennae 

 yellow, the joints beyond the third brownish. 



Male. — Length 0.88 mm. Pedicel hardly longer than wide, as 

 wide as the scape, the latter a little wider than any of the flagellar 

 joints; joints three to ten subequal in width; three twice as long as 

 wide, shorter than four; joints four to nine gradually shortening 

 distally, the eighth twice as long as wide; joint ten over twice as 

 long as wide, a little longer than the fourth, pointed apically; 

 abdomen rounded; distinctly longer than wide, as wide as the thorax; 

 second tergite as in the female; following ones polished, transverse, 

 the seventh acute apically; antennae yellowish. 



