224 



THE UNIVERSITY SCIENCE BULLETIN. 



Form: Length, 6 to 8 mm. Head much narrower than the pronotum. 

 Vertex about as wide as long, rounded anteriorly. Pronotum about as 

 long as the vertex, three times as wide as long, widest at lateral angles, 

 lateral margins short, humeral margins long, posterior margin slightly 

 emarginate. Scutellum very large. Elytra rather short and broad, 

 rounded apically, venation distinct. 



Color: Varying from light to dark brown. Vertex dirty-yellow, 

 ocelli, a median longitudinal line, and often a pair of spots on disc, brown- 

 ish. Pronotum brown, darker posteriorly in the male. Scutellum brown, 

 sometimes with basal angles and two spots on disc black. Elytra brown, 

 nervures usually darker, females with two light transverse bands. Face 

 the color of the vertex, the front usually darker. Males lack the light 

 bands on the elytra and are uniformly darker. 



External genitalia: Female, last ventral segment laterally twice as 

 long as the preceding, keeled, and with posterior margin strongly pro- 

 duced medially; pygofers short, broad basally but strongly narrowed api- 

 cally, much exceeded by the long stout ovipositor. Male, valve hidden by 

 the short last ventral segment; plates very long and narrow, becoming- 

 vertical and spiny on their apical half, their apices exceeding the ven- 

 trally shortened but dorsally produced pygofers. 



Internal male genitalia: Styles long and slender, curving, enlarged 

 distally, apices obtuse, proximal end with two chitinous processes, the 

 ventral one the larger, the whole end spreading out into a thin chitinous 

 fan-shaped base; connective of two pieces, the first is V-shaped and con- 

 nects the styles, the second is columnar, deeply cleft at the upper end for 

 the reception of the apex of the V-shaped portion and connecting with the 

 oedagus at the lower end, and the whole connective projecting ventrad. 

 instead of dorsad, as is usually the case; oedagus widened a short distance 

 from its base for the attachment of a long dorsal process which runs up 

 for the attachment of the membrane from the anal tube, then continuing 

 as a long narrow curving process which is suddenly bent and narrowed 

 preapically, and finally ending in a delicate spine-like tip. 



Distribution: This species occurs in eastern Kansas as 

 shown by the following map : 



