REVISION OF THE GENUS EXETASTES — CUSHMAN 265 



Male. — Differs from female structurally as does that of ridens; 

 also flagellum entirely black; a small yellow spot on each side of face; 

 yellow of mesoscutum confined to subtriangular spots on anterior 

 lateral margins; scutellum, postscutellum, and anterior margin of 

 pronotum immaculate ; yellow markings of legs broader. 



Type locality. — Illinois. 



Type. — Destroj^ed. 



Remarks.— Materisil examined includes one female and three males 

 reared from "cutworms" at Battle Creek, Mich., April 25, 1916, by 

 A. F. Satterthwait under his "Cage No. C610b"; two females from 

 Denver, Colo., April, E. S. Tucker; one of each sex from Colorado, 

 C. F. Baker; and one female without data except the date April 28, 

 1898. 



9. EXETASTES FLAVUS. new species 



Plate 16, Figure 4; Plate 17, Figure 28; Plate 18, Figure 59; Plate 20, 



Figure 89 



This and the next following species constitute a group conspicuous 

 principally because of the pale yellow color of the body with con- 

 trastmgly colored maculation and the unusually large ocelli. Other 

 features characteristic of the group are the long weakly convergent 

 cheeks, long nearly flat clypeus, short hind femur, and long curved 

 ovipositor. 



Female. — Length 12 mm, antennae 9.5 mm. 



Head moderately thick, occiput shallovv^, temples sharply receding, 

 convex, polished, very sparsely and minutely punctate; frons v/eakly 

 concave, medially sparsely punctate; face more densely punctate,^ 

 more than half as long as broad, somewhat roundly elevated medially; 

 clypeus nearly two-thirds as long as broad, much narrower than face, 

 wealdy transversely divided near base, sharply rounded at apex, 

 narrowly subtruncate, apical portion polished, with small scattered 

 punctures; cheeks in front view straight, theii' extended angle very 

 acute; malar space tliree-fourths basal width of mandible; mouth 

 exactly as broad as face; mandible nearly twice as long as broad, 

 gradually narrowing toward apex; junction of occipital and hypostomal 

 carinae distant from mandible by nearly two-thirds the basal width 

 of mandible; eyes prominent, as long as width of face, parallel; diam- 

 eter of a lateral ocellus as long as postocellar line and much longer than 

 ocellocular line; antenna about 50-jointed, slender, tapering but not 

 attenuate, first joint of flagellum barely twice as long as second, which 

 is nearly twdce as long as tliick, all other joints distinctly longer than 

 thick. 



Thorax rather elongate, polished, \vith fine moderately dense 

 punctation; notauli absent; scutellum strongly convex, sparsely 

 punctate; propodeum rather weakly convex, medially mat and indefi- 



