436 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



Described from a large number of specimens reared from the above- 

 named host by V. L. Wildermuth and recorded under Webster No. 

 7222 of the Bureau of Entomology, United States Department of 

 Agriculture. 



DIBRACHYS METEORI, new species. 



Female. — Length, 2.5 mm. Head and thorax dark aeneous, nearly 

 black in some lights, reticulate-punctate; the punctures of the thorax 

 deeper than those of the head; clypeus slightly concave on the ante- 

 rior margin medially, the lateral angles appearing as two very short 

 obtuse teeth; mandibles both four-dentate; cheeks opposite base of 

 mandibles with a broad depression extending laterally and upward 

 half way to the lower extremity of the eye; occiput margined as in 

 D. houcheanus; postocellar line one-third longer than the ocell-ocular 

 line; antennal scape and pedicel blackish, the fiagellum brownish 

 testaceous, pedicel distinctly shorter than the first funicle joint, first 

 ring-joint transverse, the second very slightly longer than broad, first 

 funicle joint the longest of the funicle joints, following funicle joints 

 longer than broad, except the sixth, which is nearly quadrate; club 

 3-jointed and somewhat longer than the two preceding joints of the 

 funicle. Punctures of the mesonotum not so deep on the lateral lobes 

 as medially and on the scutellum; scutellum about as long as the 

 mesoscutum; propodeum with a slight median carina, the spiracular 

 sulci and lateral folds present and distinct, surface of the propodeum 

 within the lateral folds distinctly and very finely punctate, the region 

 between the folds and spiracular sulci with shallow reticulate sculp- 

 ture, beyond the sulci to the lateral margins smooth; spiracles large 

 and long-oval. Wings hyaline, the marginal vein only slightly longer 

 than the postmarginal, the stigmal and postmarginal subequal. All 

 coxae, trochanters, and femorse, except the apices of latter, black; 

 median and posterior tibiae medially and two or three apical joints of 

 all tarsi brownish-black; apices of all femorse, most of the front 

 tibiae, bases and apices of median and posterior tibiae, and basal joint 

 of all tarsi pale yellowish. Abdomen conic ovate, slightly longer than 

 the thorax, smooth, shining, metallic green. 



Male. — The antennae are longer than in the female; pedicel very 

 short, scarcely longer than broad; ring joints both transverse; funicle 

 joints elongate, 1 to 5 being at least twice as long as broad, the sixth 

 a little shorter, but considerably longer than broad. The depression 

 at base of mandibles is shorter than in the female, the postmarginal 

 vein is slightly longer than the stigmal, and the median and hind 

 tibiae are slightly lighter than in the female. Color as in the female. 



Type-locality. — Brownsville, Texas. 



Type.— C&t. No. 16354, U.S.N.M. 



Host. — Meteorus infesting LapJiygma frugiperda. 



