22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



6. DECATOMA TEXANA, new species 



Plate 1. Figitre 5 



Very similar to D. flava Ashmead in color and sculpturing, but 

 is smaller than most specimens of ftava, the propodeum is largely or 

 entirely yellow, and the whole vertex is minutely and densely 

 punctate. 



Female. — Length 1.5 mm., bod}' and legs almost entirely yellow 

 to yellowish brown; head uniformly light yellowish brown, borders 

 of ocelli in part not so, scape and pedicel light yellow, latter deeper, 

 funicular joints slightly darker than pedicel, and club dull medium 

 brown; prothorax uniformly deep lemon yellow, mesothorax and 

 propodeum concolorous with head, faintly suffused dark above; 

 legs colored like prothorax, except that inner faces of femora are 

 dark brown, hind femora still darker, outside of middle tibiae 

 narrowly, and of hind tibiae mostly, brown; submarginal band me- 

 dium brown, two-thirds as broad as long (not including stigma), 

 quadrangular, corners rounded, proximal portion extending four- 

 fifths across wing and moderatel}- convex, distal edge reaching well 

 beyond end of stigmal veins and almost straight, apex broadly 

 rounded; secondaiy band well developed; abdomen deeper yellow- 

 ish brown than mesothorax. 



Head three-fifths as long as wide, facial outline from above 

 broadl}^ and uniformly rounded, vertex feebly convex transversely, 

 receding sharply behind ocelli, eyes and surrounding parts continu- 

 ous, not sharply demarcated, occiput slightly concave, malar space 

 and cheeks smooth, mostly bare, rest of head moderately hairy and 

 wrinkled-strigose, moderately punctate, except vertex, which is 

 finely and densely punctate, scape as long as pedicel, Fl. and F2 

 combined, more than twice as long as pedicel, latter one-third longer 

 than Fl, Fl about one-sixth longer than F2, F2 to F4 broadening 

 slightly toward club, F2 and F3 as broad as long, F4 and F5 

 broader than long; prothorax distinctly narrower than head, 

 scarcely broader than mesothorax, pronotum and mesonotum coarsely 

 but shallowly sculptured with umbilicate punctures, rather shiny and 

 inconspicuously and sparsely hairy; 10 or 11 setae on submarginal 

 vein, surface vestiture faint just distad of submarginal band, 

 coarser and more obvious beyond; sides of abdomen well rounded, 

 surface smooth, polished, posterior face and sheath of ovipositor 

 moderately hairy. 



Male. — ^Like the female, except for the usual secondary sexual dif- 

 ferences in the antennae and the abdomen. F2 to F4 are about one- 

 fourth longer than broad. 



Tyfe locality. — Brownwood, Tex. 



rjr^e.— Female, U.S.N.M. No. 42233. 



