1908] Brues, North American Parasitic Hymcnoptera. VII. 15T 
FAMILY PLATYGASTERID^. 
Rosneta, New Genus. 
Related to fidiobia Ashmead and Anopedius Foerster. Anten- 
nae nine-jointed, the funicle four-jointed ; club three jointed ; scape 
clavate, long and stout ; pedicel large ; ocelli three, in a triangle,, 
the lateral ones almost contiguous with the eye-margin ; eyes bare. 
Mesonotum with deep, sulcate, parapsidal furrows on its poster- 
ior half. Scutellum flat, broad and short. Abdomen nearly one- 
half longer than the head and thorax together, narrowly sessile; 
second segment very long ; tip of abdomen broadly rounded. 
Wings scarcely pubescent, not ciliate on the margins. 
Type: R. tritici sp. nov. 
Rosneta tritici sp. nov. 
Female. Length 0.6 mm. Black, the leg's including- coxae and 
antennfe except club, rather light yellow. Head twice as wide as thick, 
its occipital margins slightly concave ; surface punctulate ; ocelli in a 
broad triangle, the lateral ones removed by less than their own diame- 
ter from the eye-margins. Antennfe 9-jointed, short and stout, the 
scape two-thirds as long as all the following joints together, strongly 
incrassated ; pedicel larg-e, stouter and fully twice as long as the first 
flagellar joint, which is slightly longer than wide ; second to fourth 
flagellar joints very small, quadrate, about as wide as the first; follow- 
ing three forming a very large stout oval club, the first two joints of 
which are quadrate and the apical one a trifle longer and conic. Eyes 
bare, Prothorax and mesonotum roughly punctulate, the scutellum 
smooth and shinning ; parapsidal furrows indicated only on the poster- 
ior one-half of the mesonotum, but very deep and broad, in the form 
of deejD sulci which have a polished smooth surface. Scutellun broad 
and short, fulh^ twice as broad as long, at its extreme sides with a 
longitudinal groove which is farther from the median line then the 
parapsidal furrow. Metanotum very short and sharply truncate be- 
hind ; above with two widely separated median longitudinal carinse 
just outside the postscutellum, and with the lateral margins less dis- 
tinctly carinated. Abdomen oval, rounded at the tip, almost sessilt 
at the base ; first segment short, second long, fully three times as long 
as the following together which decrease rapidly in length to the tip. 
Legs stout, the femora strongly and the tibiae more weakly clavate. 
Wings veinless, hyaline, not ciliate and only very weakly pubescent on 
the surface. 
Described from six specimens reared from wheat stubble col- 
lected at Middleport, N. Y. and sent me by Mr. C. R. Crosby of 
Cornell University. 
Anopedius error Fitch has also been reared from Dipiosis 
tritici affecting w^heat, but I do not believe it could possibly be 
this species, even though Fitch's original account is rather too» 
indefinite to place his species very accurately. 
