LAWSON: KANSAS CICADELLID^E. 241 



External genitalia: Female, last ventral segment long, posterior mar- 

 gin roundingly produced, but with the sides not sinuous; pygofers long, 

 rather bristly, slightly exceeded by ovipositor. Male, last ventral seg- 

 ment over twice the length of the preceding, broad, posterior margin 

 broadly rounding, covering the valve; plates broad and long, spiny, the 

 upturned tips being laterally compressed and obtuse apically; pygofers 

 very short, completely hidden by the plates. 



Distribution: Fairly common in the eastern portion of the 

 state as indicated by its occurrence in Douglas, Pottawatomie, 

 Riley and Sedgwick counties. 



Hosts: This species is usually abundant on willow. Leonard 

 gives poplar as another host. 



Empoasca albolinea Gill. 



Ewpoasca albolinea Gill., Proc. U. S. Natl. Mus., xx, p. 732, 1898. 

 Empoasca albolinea Tuck., Kan. Univ. Sci. Bui., iv, p. 68, 1907. 

 Empoasca albolinea Van D., Cat. Hemip. N. A., p. 704, 1917. 



Form: Length, 3.5 mm. Head not as broad and more rounding an- 

 teriorly than in obtusa Vertex slightly longer on middle than next the 

 eye, over twice as wide as long, broadly rounding apically. Pronotum 

 nearly three times as long as the vertex, less than twice as wide as long. 

 Elytra characteristic of the genus. 



Color: Greenish-yellow. Vertex with median white line and two white 

 lateral spots or lines. Pronotum with three white spots on anterior mar- 

 gin and a characteristic pale median longitudinal line. Scutellum with 

 white median line. Elytra yellowish, sometimes smoky, the claval suture 

 broadly pale. Face yellowish above, greenish below, sometimes unmarked, 

 sometimes with a median longitudinal line, a line next each eye, and a line 

 between these and the median line, white. 



External genitalia: Female, last ventral segment long, posterior mar- 

 gin produced and entire; pygofers moderately robust, spiny mesally, ex- 

 ceeded by ovipositor. Male, last ventral segment broad and long, cover- 

 ing the valve; plates as in obtusa but with a much thicker covering of 

 much longer spines and hairs; pygofers very short, completely hidden by 

 the plates. 



Distribution: Our only records for this species are from 

 Douglas county. 



Hosts: Our specimens were taken at electric lights. Gillette 

 gives willows as the host plant. 



Empoasca alboneura Gill. 



Empoaxca alboneura Gill., Proc. U. S. Natl. Mus., xx, p. 743, 1898. 

 Empoasca alboneura DeL., Tenn. St. Bd. Ent., Bui. 17, p. 101, 1916. 

 E,,il,aca alboneura Van D., Cat. Hemip. N. A., p. 705, 1917. 



Form: Short and fairly robust. Length about 3 mm. Vertex about 

 one-third longer at middle than next the eye, over twice as wide as long. 



16 Sci. Bui. 3058 



