LAWSON: KANSAS CICADELLID^E. 141 



Deltocephalus areolatus Ball. 



Deltocephalus areolatus Ball, Can. Ent., xxxi, p. 188, 1899. 

 Deltocephalus areolatus Osb., 20th Kept. N. Y. St. Ent., p. 520, 1905. 

 Deltocephalus areolatus Van D., Cat. Hemip. N. A., p. 640, 1917. 



Form: Short, robust, wedge-shaped, the head forming the apex of 

 the wedge. Length, 2.75 to 4 mm. Vertex nearly twice as long as width 

 between the eyes, apex roundingly acute. Pronotum over twice as broad 

 as long, lateral margins very short, humeral margins rounding into 

 slightly concave posterior margin, anterior margin strongly convex; 

 elytra short, flaring, two outer apical veinlets strongly reflexed. 



Color: Olive-green or yellowish; vertex with two black spots apically, 

 elytra with large dark brown spot back of cross nervure, margin of 

 third apical cell and anterior margin of reflexed veinlets dark brown. 

 All but tarsi and part of genitalia below, black. 



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

 preceding, strongly na'rrowed posteriorly, lateral angles strong, posterior 

 margin broadly and deeply excavated with a large, medially cleft tooth 

 which equals the lateral angles; sparsely spined pygofers broad, equalling 

 ovipositor. Male, last ventral segment shorter than preceding, slightly 

 concave posteriorly, valve broad, triangular, posterior margin rounding 

 medially; plates the width of the valve basally, twice as long as valve, 

 spiny and slightly concave margins narrowing to slightly divergent apices 

 which are slightly exceeded by the spiny pygofers. 



Distribution: Reported by Van Duzee from Kansas. Taken 

 in Riley county. 



Host: Specific host unknown. Probably a grass feeder. 



Deltocephalus imputans 0. & B. 



Deltocephalus imputans O. & B., Proc. Dav. Acad. Sci., vii, p. .75, 1898. 

 Deltocephalus imputans DeL., Tenn. St. Bd. Ent., Bui. 17, p. 43, 1916. 

 Deltocephalus imputans Van D., Cat. Hemip. N. A., p. 640, 1917. 

 Dfltocephalus imputans Feat., Ohio Jl. Sci., xviii, No. 6, p. 184, 1918. 



Form: Wedge-shaped like areolatus. Length 3.5 to 4 mm. Vertex 

 about one-third longer than basal width, acutely pointed, margin dis- 

 tinct. Pronotum as in areolatus. Elytra short, equalling abdomen, flar- 

 ing, outer anteapical cell and second cross nervure sometimes wanting, 

 two outer apical nervures strongly reflexed. 



Color: Creamy yellow; vertex with two black spots apically, from 

 which lines to ocelli and median line are reddish-brown. Elytra with 

 anterior margin of reflexed veins and margin of third apical cell broadly 

 black. Face black with sometimes a light spot on apex of front. 



External genitalia: Female, last ventral segment half longer than 

 preceding, narrowed posteriorly to acute lateral angles, posterior margin 

 emarginate on either side of a wide, roundingly produced and medially 

 notched median lobe; pygofers sparsely bristled, broad, equalling ovi- 

 positor. Male, last ventral segment about half as long as preceding, 

 valve broad, two to three times as long as ultimate segment, subacute 



