SYNONYMICAL AND DESCRIPTIVE NOTES ON 

 PARASITIC HYMENOPTERA 



By A. B. Gahan 

 Of the Bureau of Entomology, United States Department of Agriculture 



In this paper will be found notes and descriptions dealing with 

 species referred to the families Braconidae, Chalcididae, Encyrtidae, 

 Pteromalidae, Eulophidae, Scelionidae, and Bethylidae. 



Family BRACONIDAE 



OPIUS BELLUS, new species 



This species is very distinct from any other represented in the 

 collection of the United States National Museum. Opius tnmacula- 

 tus Spinola is said by Lounsbury/ to infest the same host, but ac- 

 cording to Brues and Richardson - that species has hyaline wings. 



Female. — Length, 3.5 to 4.5 mm. Yellowish testaceous; antennae 

 entirely, tips of mandibles, ocellar triangle, tegulae apically, and 

 ovipositor sheaths black; hind tibiae fuscous, darker at bases and 

 apices; hind tarsi entirely and the apical joint of fore and median 

 tarsi black; wings uniformly strongly fuscous, veins and stigma 

 blackish. Mesoscutum often with a large spot anteriorly and another 

 at each lateral posterior angle, black or blackish. x4-ntenna inserted 

 a little above middle of eyes, 40-jointed in the type (37-40 in the 

 series), a little longer than the body, slightly tapering from base to 

 apex, the first flagellar joint about twice as long as thick, following 

 joints shorter. Head smooth, polished, clothed with pale hairs; 

 viewed from above transverse, as broad as thorax and not quite 

 twice as broad as long, the temples about half as broad as eyes and 

 not at all receding; face hairy, smooth, with very weak setigerous 

 punctures; distance between the eyes below antennae distinctly 

 greater than distance from antennae to apex of clypeus; anterior 

 margin of clypeus somevv^hat produced; no opening between clypeus 

 and mandibles ; mandibles bidentate at apex with a straight ventral 



1 Agr. Journ. Cape of Good Hope, vol. 27, 1905, p. 468. 



2 Bull. Amer. Mus. Nat. Hist., vol. 32, 1913, p. 503. 



No. 2831.— Proceedings U. S. National Museum, Vol. 77, Art. 8 



93065 — 30 1 



