248 THE UNIVERSITY SCIENCE BULLETIN. 



two pairs of slender and acute lateral processes and a large curved ter- 

 minal process, the blunt tip of which is serrate on the dorsal margin. 



Distribution: Probably occurs throughout the eastern part 

 of the state. Reported from Dauglas, Pottawatomie and Riley 

 counties. 



Hosts: Very common on grape and easily gathered from 

 leaves in winter. McAfee also gives hickory as a host. 



Genus Erythroneura Fh. 



The members of this genus are very similar to the members 

 of the genus Typhlocyba, but differ in having the second apical 

 cell of the elytra completely separating the first and third 

 apical cells. The hind wings lack a marginal vein and there 

 are but three sectors extending to the margin. 



After studying the internal male genitalia of the material 

 available we find our state list to contain thirteen species and 

 five varieties of this genus. In this paper six of the varieties 

 have been given specific rank. 



KEY TO SPECIES. 



A. General color above yellowish or whitish. 



B. Elytra with definite transverse bars. 



C. Bands across pronotum and middle and apex of elytra. 



tricincta. 



CC. Broad brownish band across base of elytra. 



basalaris. 

 BB. Elytra without definite transverse bands. 



C. Species marked with red spots above. 



D. Vertex and pronotum usually marked with red 

 spots. 



E. Scutellum entirely red. ruhroscuta. 



EE. Scutellum not entirely red. 



F. Vertex, pronotum, and scutellum each 

 with a red spot. illinoiensis. 



FF. Vertex, pronotum, and scutellum each 

 with several red spots. maculata. 

 DD. Vertex and pronotum usually marked with red 

 lines. 



E. Scutellum black. scutelleris. 



EE. Scutellum not black. 



F. Elytra blood red to near the cross veins. 



creiwcceuri. 



FF. Elytra with zigzag red or blood red 

 lines or. spots. comes- 



CC. Species marked with oblique red lines above. 

 D. Species yellowish, oblique lines distinct. 



obliqua. 



