LAWSON: KANSAS CICADELLID^E. 



107 



Form: Wedge-shaped, robust. Length, 6 to 7.25 mm. Head very flat 

 and thin, narrower than pronotum. Vertex about twice as broad as 

 long, obtusely angular apically. Pronotum broadest at posterior lateral 

 angles, humeral margins longer than the lateral margins, sinuate, 

 roundingly angled with the posterior emarginate margin, anterior mar- 

 gin quite convex. Apex of scutellum long and acute. Elytra broad and 

 long, much exceeding abdomen and perpendicular apically. Entire dor- 

 sal surface coarsely and deeply pitted. 



Color: Female bright green, elytra faded apically. Occasionally a 

 female will be very light green, very irregularly mottled all over with 

 dark brown, giving her a brownish rather than a greenish color. Males 

 are usually a dirty yellowish-green. The vertex bears a broad brown 

 median stripe which extends on to the pronotum and makes the disc and 

 posterior margin brown. Elytra with a brown spot before the clavus 

 and often with a series of smaller spots along sutural margin to the 

 apex. 



External genitalia: Female, last ventral segment very long, as long 

 as wide, and incised medially clear to the base, forming two large approxi- 

 mate lobes; pygofers are broad and long, slightly exceeded by ovipositor, 

 and bearing short appressed hairs. Male, last ventral segment long, 

 posterior margin somewhat convex, hiding the valve; plates very long 

 and narrow, pointed apically, exceeding the short pygofers. 



Internal male genitalia: Styles large and very characteristic, basal 

 half club-shaped, then suddenly narrowed and gradually thickening to a 

 broad truncate apex with a distinct inner acutely pointed angle, the outer 

 angle being rounded; the connective is broad basally, tapering sinu- 

 ately to the apex; the oedagus has a small basal, dorsally directed proc- 

 ess followed by a sharp constriction, and terminates in a bluntly pointed 

 process, which, viewed laterally, appears triangular. 



Distribution: A common form found throughout the state as 

 shown by the following map : 



Hosts: A grass feeding species. De Long records it as es- 

 pecially abundant on Aristida gracilis. 



