LAWSON: KANSAS CICADELLID^E. 



201 



Distribution: This is our commonest Phlepsid. It is found 

 throughout the state as shown by the following map : 



Hosts: One of our most destructive leaf hoppers. Common 

 on grasses, grains, alfalfa, and clover. 



Phlepsius truncatus Van D. 



Phltpsius truncatus Van D., Trans. Am. Ent. Soc., xix, p. 72, 1892. 

 Phlepsius truncatus DeL., Tenn. St. Bd. Ent., Bui. 17, p. 72, 1916. 

 Phlepsius truncatus Van D., Cat. Hemip. N. A., p. 672, 1917. 

 Phlepsius truncatus Kent., Ohio Jl. Sci., xviii, p. 185, 1918. 



Form: Similar to irroratus, narrow and elongate. Length, 5.5 to 

 6.25 mm. Head slightly wider than pronotum ; vertex one-fourth longer 

 on middle than next the eye, over twice as broad as long, disc slightly 

 transversely depressed, obtusely angulate apically. Pronotum slightly 

 over twice the length of the vertex, lateral margins shorter than the 

 humeral, posterior margin slightly emarginate, without transverse 

 wrinkles. Elytra broader than in irroratus, narrowed apically. 



Color: A trifle darker than irroratus. Vertex yellowish, irrorate with 

 brown, sometimes with whitish spots on posterior margin. Pronotum with 

 disc darker than margins. Scutellum pale with two black spots on each 

 margin. Elytra whitish, very closely inscribed with brown. Face yel- 

 lowish, closely and evenly inscribed with brown. 



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

 the preceding, lateral margins sinuate, posterior margin truncate, lateral 

 angles rounded ; pygofers rather long and narrow, slightly exceeded by 

 the ovipositor, sparsely spined distally. Male, valve as broad as last 

 ventral segment, triangular, obtusely rounded apically; plates wide, not 

 quite four times as long as the valve, submarginally spined margins 

 sinuately tapering to obtuse apices which greatly exceed the very short, 

 apically bristled pygofers. 



Distribution: Taken in Riley and Pottawatomie counties. 

 Hosts: Found on grasses with irroratus. 



