LAWSON: KANSAS CICADELLID^. 133 



Platymetopiun aciitvs Osb., U. S. Dept. Agr., Div. Ent., Bui. 108, p. 69, fig. 9, 1912. 

 Platymetopius acutui Osb., Me. Agr. Exp. Sta., Bui. 238, p. Ill, 1915. 

 Platymet jpius acxitns DeL., Tenn. St. Bd. Ent., Bui. 17, p. 39, 1916. 

 Platymetopius acutus Van D., Cat. Hemip. N. A., p. 635, 1917. 

 Platymetopius acutus Pent., Ohio Jl. Sci., xviii. No. 6, p. 183, 1918. 

 Platymetopins acutus Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 53, 1919. 



Form.: Length, 4.5 to 5 mm. Vertex of male distinctly longer than 

 width between the eyes, in female almost half longer than basal width. 

 Pronotum twice as broad as long, anterior margin quite convex, posterior 

 margin slightly concave, humeral margins longer than lateral margins. 

 Elytra wide, exceeding abdomen. 



Color: Vertex yellowish, irrorate with brown, an indistinct line near 

 each eye, a pair on the disc, one on apical third, and four spots on pos- 

 terior margin, whitish or yellowish. Pronotum brown, with five white 

 longitudinal stripes. Scutellum brown, with two whitish longitudinal 

 stripes. Elytra light brown with dark ramose lines and spots and dis- 

 tinct round or oval milky white spots. P'ace yellow, infuscated on base of 

 front and outer portions of cheeks, former with broad, white, angular 

 line which continues behind the eyes. Beneath black, marked with 

 whitish. 



External genitalia: Female, last ventral segment long, sinuate, nar- 

 rowed posteriorly, lateral and posterior margins forming regular curve; 

 pygofers long and narrow, scarcely exceeding ovipositor, sparsely bristled. 

 Male, last ventral segment very short; valve very large, nearly as long 

 as wide, broadly and obtusely angled posteriorly; plates long, nearly 

 equalling sparsely bristled pygofers, widening after leaving base, then 

 tapering regularly to subacute apices, lateral margins spiny. 



Internal male genitalia: Styles broad basally, with large process for 

 attachment to connective, terminating in a finger-like inner process about 

 half the width of the middle portion; connective very characteristic of 

 the genus, consisting of a broad, short-armed U-shaped piece from 

 which there extend out, separated by a small process, two long styles 

 which each curve entirely around the oedagus and extend far beyond it, 

 ending in a somewhat flattened and then acutely pointed apex; oedagus 

 viewed from the side is V-shaped, with two processes directed caudad 

 for attachment to base of anal tube, the oedagus proper being a gently 

 curving, obtusely pointed organ with its surface roughened or serrated, 

 directed dorso-caudad. 



