ENTOMOLOGICAL NEWS [Nov., '15 



A New Trichogrammatid from Trinidad (Hym.). 



By A. A. GIRAULT, Washington, D. C. 



Uscana pallidipes new species. 



Female. Length, 0.55 mm. Black, the legs, head and thorax pale 

 golden yellow, except for a large, triangular black area from cephalic 

 margin of scutum to about middle, divided along the meson by yellow 

 and not extending to lateral margins. Fore wings distinctly infuscated 

 out to the end of the stigmal vein. 



Marginal fringes of caudal wing distinctly longer than the greatest 

 width of the blade, the latter bearing a single, complete line of discal 

 ciliation a little cephalad of the middle. Fore wings with about 4-7 

 setae in the oblique line of discal cilia from the stigmal vein, with 

 about seven complete, regular lines of discal cilia from apex to a line 

 drawn across apex of the venation (a few short lines between the 

 others distad), the marginal cilia longer than usual (about a little 

 over one-fourth the greatest wing-width, uniform and longest around 

 the rather broadly flattened apex, the blade widest just proximad of 

 apex), the marginal ciliation somewhat shorter than that of the hind 

 wings. Stigmal vein not quite half the length of the marginal, the 

 latter distinctly over half the length of the submarginal and with a 

 number of short setae from its surface. A patch of 6-12 minute setae 

 (the cephalic 2-3 larger) near caudal margin about opposite middle of 

 the marginal vein. 



Pedicel stout, somewhat longer than wide, not half the length of the 

 club. Club with rather long, scattered setae, acuminate, without a 

 terminal spine. Scape slender, not long. Tarsal joints not long. 

 Abdomen short, conic-ovate, the ovipositor inserted at about the 

 middle. 



Male. The same, except for the different shape of the abdomen. 



Described from five males, one female marked "Horiola sp. 

 Pt. Spain. P. Lachmere-Guppy. Letter November 27, 1911." 

 The fourth trichogrammatid from Horiola eggs. 



Habitat : Port of Spain, Trinidad, West Indies. 



Type: Cat. No. 19,131, U. S. National Museum, Washing- 

 ton, one female on a slide with a male allotype and paratype. 

 A second slide with three males in same collection. 



Differs markedly from semi-fumipennis (types compared) 

 in having the legs all pale, the wings distinctly narrower and 

 much less ciliated discally, the marginal cilia distinctly much 

 longer, also the marginal vein, the caudal wings bear only one 

 line of discal cilia (three in the genotype), the stigmal vein is 

 not half the length of the marginal (more than half in the 

 genotype), the stigmal vein is not darkened as in the other 

 and the general coloration is somewhat different (the yellow 

 coloring of the thorax duller in the genotype). 



This species has the general appearance of Tumidlclava pul- 

 chrinotum Girault when viewed with a hand lens, but the 

 club is not swollen and the stigma vein is normal. 



