ART. 15». REVISION OF SUBFAMILY PLATYGASTERINAE — FOUTS. 



1. FIDIOBIA FLAVIPES Ashmead. 



FidiobiaflavipesAsnUEAV, Cincinnati Soc. Nat. Hist., 1894, p. 171. 

 Rosneta tritici Brues, Bull. Wise. Nat. ffist. Soc, vol. 6, 1908, p. 157. 



Female. Length 0.70 mm. Body somewhat flattened; head as 



wide as the thorax, twice as wide as long, finely shagreened; frons 

 faintly aciculate, more strongly so below; thorax a trifle longer than 

 wide, broadly rounded ante- 

 riorly, narrowed behind the 

 tegulae, with no sculpture to 

 speak of unless it be a faint 

 shagreening ; notauli present 

 on posterior half of mesono- 

 tum, shallow and broad; 

 scutellum twice as wide as 

 long, polished; abdomen as 

 wide as the head, gradually 

 narrowed anteriorly, as long 

 as the head and thorax 

 united, two-thirds as wide as 

 long, without sculpture and 

 without pubescence ; first 

 tergite two and one-half 

 times as wide as long, nar- 

 rowed anteriorly ; second ter- 

 gite oblong, the sides nearly 

 parallel, slightly over two- 

 thirds as wide as long; basal lateral foveae oblique, shallow, not 

 attaining the middle of the segment; segments two — five mostly 

 concealed beneath the large second segment, narrow if visible at all, 

 sixth segment triangular, wider than long; wings extending half the 

 length of the second segment past the apex of the abdomen, subhya- 

 line, pubescent. Castaneous; legs and antennae stramineous. 



Male. — Length 0.70 mm. Differs little from the female except in 

 secondary sexual characters. The antennae of both the male and 

 the female are shown greatly enlarged, in the accompanying illustra- 

 tion. 



Type locality. — Ohio. 



TyjM. — Cat. No. 1449, U.S.N.M. Type selected, also 2 paratypes. 



The description of the female is based upon the type material in 

 the collection of the United States National Museum. The male is 

 described, or rather its antenna figured, from one of a series of speci- 

 mens labeled "Ithaca, N. Y., M. V. Slingerland, collector." This 

 series is now deposited in the national collection along with the 

 Ashmead types. 



550e— 24— Proc.N.M.vol.63 19 



Fig. 2.— Fidiobia flavipes Ashmead. Antennae. 

 a. of the female. 6. of the male. 



