LAWSON: KANSAS CICADELLID^E. 179 



row of small dark spots near and parallel to anterior margin. Scutellum 

 With four dark spots along base. Elytra fuscous, subhyaline, nervures 

 pale except for the aj)ical ones, which are strongly fuscous. Face brown- 

 ish, with darker stripes and sometimes the apex of the clypeus fuscous. 



External genitalia: Female, last ventral segment about the length of 

 the preceding, posterior margin slightly emarginate; pygofers rather 

 narrow, much exceeded by the long ovipositor, very sparsely spinel. 

 Male, valve very small, equilaterally triangular, one-third as wide as lart 

 ventral segment; plates but little exceeding the valve, bristly margins 

 broadly rounding, exceeded by the pygofers. 



Distribution: Taken in Cherokee, Douglas and Riley coun- 

 ties. 



Hosts: Osborn and Ball give Andropogon scoparius as a host 

 plant. It likely occurs on other grasses also. 



Genus EUTETTIX Van D. 



Doctor Ball characterizes this genus as follows : 



"Rather stout, head of about the same width as pronotum. 

 Vertex rather short, slightly sloping, distinctly transversely 

 depressed, the apex often slightly concavely upturned. Elytra 

 moderately long, usually slightly flaring, venation simple, only 

 one cross nervure between the sectors. Elytra without super- 

 numerary veinlets or ramose lines, or with these reduced or 

 aggregated into oblique bands." 



Mr. Van Duzee adds E. cinctus 0. & B. to this group. It 

 usually has but one cross nervure between the sectors, but has 

 supernumerary veinlets to the costa. 



The six species keyed below have been taken in Kansas. 



KEY TO SPECIES.* 



A. Elytra without distinct transverse bands. 



B. Large species, over 5 mm. long, elytra black, with large yellow 



commissural spot. pictus. 



BB. Small species, less than 4 mm. long, pale yellowish-green. 



tenellus. 



AA. Elytra with oblique bands, obscure in albidus. 

 B. Elytra with oblique bands distinct. 



C. Anterior half of elytra white or but faintly reticulated. 



seminudus. 



CC. Anterior half of elytra distinctly marked. 



D. Insect reddish, no oblique spot on base of clavus. 



strobi. 

 DD. Insect not reddish, a black oblique spot on base of 



clavus. cinctus. 



BB. Elytra without distinct oblique band, with whole elytra 

 sparsely reticulate. albidus. 



* Adapted from key by Doctor Ball, Proc. Dav. Acad. Sci., xii, p. 31, 1907. 



