THE CANADIAN ENTOMOLOGIST 233 



A NEW GENUS AND SPECIES OF TRICHOGRAMMATID^ 

 FROM THE PHILIPPINES. 



BY A. A. GIRAULT, 



Bureau of Entomology, U. S., Department of Agriculture. 



The following genus belongs to the Chaetostrichini : 



Pseudobrachysticha, new genus. 



Female. — In my table of genera runs to Brachysticha Mayr, but 

 differs from that genus in that there is only one-ring joint and the 

 fore wings are naked, the marginal ciliation at the apex but moder- 

 ately long and the club is 2-jointed, the antenna? 6-jointed. More- 

 over, in the male the club is solid. Because the single funicle joint 

 is connected rather closely with the club, sometimes making the 

 latter appear 3-iointed, this genus may be confused with Plcrygo- 

 gramma Perkins, but the male is different from the female, the 

 discal ciliation of the fore wing is absent, excepting a single line 

 of it along the cephalic margin from venation to apex, the funicle 

 is really present; and the ovipositor is inserted in the middle of the 

 abdomen. Marginal vein as long as the submarginal, the stigmal 

 with a short neck and a rounded knob. Mandibles tridentate. 

 Male the same, except the shape of the abdomen and the 5-jointed 

 antenna?. A short, distinct postmarginal vein. 



1. Pseudobrachysticha semiaurea, new species. 



Female. — Length, 0.60 mm. 



Bright golden yellow, the abdomen black ,(the incisions of the 

 segments sometimes showing through as yellow cross-stripes), the 

 venation dusky black, the fore wing smoky from base to slightly 

 beyond the apex of the venation, but subhyaline at base to the 

 break of the submarginal vein and along under the marginal vein, 

 the infuscation accented across froni base of the marginal vein 

 and less so across from the apex of the stigmal (thus more or less 

 bifasciate). Caudal wings slightly dusky to some little distance 

 beyond the venation. Two to four isolated cilia on the fore wing 

 in a line longitudinally between apex of stigmal vein and apex of 

 the wing. Marginal cilia at apex of the fore wing about between 

 a fourth and a third of the greatest wing width, distinctly shorter 

 the caudal marginal cilia of the caudal wing. The latter rather 

 broad, but distinctly narrower than the length of its marginal 



July, 191.5 



