486 PROCEEDINGS OF THE NATIONAL MUSEUM vol.83 



lapsed, but apparently the scrobes are not at all separated, while the 

 forewing is rather abruptly rounded or subtruncate at apex, and the 

 marginal fringe is not especially short, being approximately half as 

 long as the stigmal vein. The males may be distinguished at once 

 from those of malacosomae by the fact that the scape is distinctly 

 thicker and the flagellum shorter. 



Female. — ^Length' 2 mm. Moderately slender and elongate, the 

 abdomen more than one and one-half times as long as head and 

 thorax combined. Antennal scape normal; pedicel a little more 

 than twice as long as thick at apex; ring joints minute; first funicle 

 joint about as long as pedicel, second and third funicle joints sub- 

 equal and each a little shorter than the first; club 3-jointed, very 

 slightly thicker than funicle and in length subequal to the two pre- 

 ceding funicle joints. Head nearly uniformly sculptured; cheeks 

 very nearly as long as height of eyes; ocellocular line about equal 

 to diameter of an ocellus. Thorax dorsally with fine, irregular, 

 shallow lineation, more or less shining medially ; median groove 

 on mesoscutum distinct ; propodeum medially smooth and very short, 

 laterally weakly sculptured and longer; forewings not reaching to 

 apex of abdomen, evenly rounded at apex, the marginal fringe much 

 shorter than half the length of stigmal vein; postmarginal vein en- 

 tirely absent. Abdomen fully twice as long as thorax, acute at apex, 

 weakly sculptured and thickly studded with rather conspicuous, pale, 

 stiff hairs; ovipositor extending a little beyond apex of seventh 

 tergite which is acutely triangular. Head, thorax, and abdomen 

 brownish black, distinctiy but not strongly tinged with metallic 

 green ; scape pale yellowish, flagellum brownish testaceous, the pedicel 

 dark brown above; mandibles, clypeus, and narrow oral margin 

 reddish; wings hyaline, venation testaceous, tegulae dark; all coxae 

 and femora concolorous with the thorax; trochanters, apices of all 

 femora, all tibiae, and tarsi pale yellowish ; ovipositor sheaths black. 



Male. — Length 1.5 mm. Antennal scape distinctly thickened, ap- 

 proximately three times as long as broad, deeply channeled beneath 

 for its whole length; funicle 4-jointed, the first joint about equal 

 to the pedicel in length, about one and one-half times as long as 

 broad; second joint subequal to the first; third and fourth joints 

 subequal and subquadrate; club as long as two preceding joints; 

 forewings extending distinctly bej^ond apex of abdomen; abdomen 

 ovate, about as long as head and thorax. Other characters as in 

 the female except that the scape is entirely fuscous. 



Type locality. — Texas, probably Uvalde. 



Type.— U.S.N.M. no. 51450. 



Described from three females and one male reared in June 1929 

 from Gerstaeckeria porosa LeConte. 



U. S. GOVERNMENT PRINTING OFFICE: 1931 



