ART. 7 NEW PARASITIC HYMENOPTEKA MUESEBECK 15 



Described from 12 females and 8 males reared by K. T. Webber 

 under Gypsy Moth Laboratory No. 11788 H 1. The type, allotype, 

 and 12 paratypes are in the United States National Museum; the 

 remaining paratypes are at the gipsy moth laboratory. 



APANTELES CERURAE, new species 



Kuns to couplet 162 in my key ^ and in most similar to congregatus^ 

 from which it is at once distinguished, however, by the shorter and 

 more robust abdomen, the shorter and broader second abdominal ter- 

 gite, the more delicate sculpturing of the basal abdominal tergites, 

 and by the much narrower membranous margins on the first tergite. 



Female. — Length 2.2 mm. Face but very little broader at base of 

 clypeus than long, weakly punctate, shining; frons and vertex 

 smooth, polished; postocellar line at least as long as ocell-ocular line; 

 antennae as long as the body, the segments becoming gradually shorter 

 apically, but even the last three or four segments being much longer 

 than broad; thorax robust; mesoscutum rather uniformly covered 

 with distinct close punctures; scutellum large, evenly convex, very 

 faintly punctate and polished; propodeum finely rugulose, with the 

 median longitudinal carina usually wanting or indistinct ; mesopleura 

 polished, with only a few punctures anteriorly; stigma more than 

 twice as long as its greatest width ; radius arising beyond middle of 

 stigma, much longer than intercubitus and distinctly tending out- 

 wardly ; posterior coxae large, considerably more than half as long as 

 the abdomen, polished ; inner spur of middle tibiae distinctly longer 

 than metatarsus of middle legs; inner spur of posterior tibiae de- 

 cidedly more than half the length of posterior metatarsus ; abdomen 

 shorter than thorax, broad ; chitinized plate of first tergite broaden- 

 ing strongly behind, the lateral membranous margins being so nar- 

 row that they are apparent only at extreme apex of the tergite ; basal 

 half of this plate smooth and polished, the apical half weakly punc- 

 tate; second tergite transverse, nearly three times as broad as long, 

 with a suggestion of oblique grooves laterally, weakly irregularly 

 punctate and strongly shining, polished medially, and its posterior 

 margin slightly curved; third tergite much more than twice as long 

 as broad, and together with the following tergites, smooth and pol- 

 ished; hypopygium scarcely attaining apex of last dorsal segment; 

 ovipositor sheaths barely exserted. Black; antennae entirely black; 

 tegulae yellow; wings hyaline, stigma and veins pale brown; coxae 

 black, the fore and middle pairs more or less yellowish beneath ; re- 

 mainder of legs yellow, except extreme apex of hind femora above 

 and the posterior tarsi, which are slightly infuscated; abdomen black, 

 a little yellowish beneath at base. 



iProc. U. S. Nat. Mus., vol. 58, 1920, pp. 487-502. 



