22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



SENOTAIMA FLAVICORNIS (Townsend) 



Millogramma flavicornis Townsend, Trans. Amer. Ent. Soc, vol. 18, p. 



355, 1891. Type from southern Illinois. 

 Miltogramma similis Townsend, Trans Amer. Ent. Soc, vol. 18, p. 357. 

 Miltogramma kansensis Townsend, Can. Ent., vol. 24, p. 68, 1892. 



Male. — Front at narrowest 0.25 of the head width (measurements 

 of five 0.24, 0.24, 0.24, 0.25, 0.28); front and face silvery pollinose; 

 vitta brownish, somewhat polUnose, ^vidth at base of antennae not 

 more than twice the diameter of lowest ocellus, widening to slightly 

 more than width of parafrontal at ocellar triangle; frontal row with 

 12 to 18 bristles; with one reclimate and usually two, sometimes one, 

 three or even more proclinate orbital bristles; sparse bristly hairs on 

 parafrontals outside the frontal row; antennae red, third joint two 

 to two and one-half times as long as the second; arista thickened on 

 basal half, penultimate joint almost twice as long as wide; para- 

 facials bare; facial ridges bristly on lowest fifth; bristles frequently 

 scattered rather irregularly over the expansion of the facial ridges 

 lateral to vibrissae; in profile, width of bucca is subequal to para- 

 facials, and equal to one-eighth of eye height; eye height almost 

 twice eye width; palpi nearly filiform, scarcely larger than arista, 

 yellow. Thorax thinly gray pollinose over black, with three narrow 

 median vittae not extending beyond transverse suture; caudad of 

 suture, three broad black vittae; two strong sternopleurals, and two 

 postsutural dorsocentrals of which the anterior one is much the 

 weaker; three pairs of marginal scutellars of about equal size. Abdo- 

 men black, usually with a lateral red spot involving the second and 

 freciuently the thu^d and fourth segments on their sides, separated 

 dorsally by a black vitta; thinly gray pollinose on the bases and sur- 

 rounding the black polished apices of the last three segments; no 

 median marginal bristles on the first two segments, a marginal row 

 on each of the last two. The inner forceps of the genitalia (pi. 2, 

 fig. 9) are black with rather long slender tips, slightly thinner one- 

 third the distance back than just before the tips; outer forceps nearly 

 as long and as large as the inner, rather broad, with sharply pointed 

 tips directed anteriorly and not apposed to the tip of inner forceps; 

 posterior clasper bearing a long bristle; penis with a spiniferous, 

 membranous hood terminating in a small pendant cylindrical 

 process. Wings with one to five bristles in a tuft at base of third 

 vein. Legs black; middle tibia with a single bristle on outer front 

 side near middle. 



Female. — Front at narrov.^est 0.22 of head width in the single 

 specimen measured; frontal rows not so thickly beset with bristles; 

 third antennal joint one and one-half times as long as second. Gen- 

 italia retracted within abdomen in repose. Claws and pulvilli 

 much shorter than hist tarsal joint. Otherwise like the male. 



