208 THE UNIVERSITY SCIENCE BULLETIN. 



Acinopterus acuminatus DeL., Tenn. St. Bd. Ent., Bui. 17, p. 89, 1916. 

 Acinopterus acuminatus Van D., Cat. Hemip. N. A., p. 675, 1917. 

 Acinopterus acuminatus Lathr., 8. C. Agr. Exp. Sta., Bui. 199, p. 102, 1919. 



Form: Rather robust, slightly tapering posteriorly. Length, 5 to 6.5 

 mm. Head distinctly narrower than pronotum, vertex nearly twice as 

 long on middle as next the eye, about twice as wide as long. Pronotum 

 over twice as wide as long, lateral margins long, posterior margin con- 

 cave, disc transversely wrinkled. Scutellum large, entire surface granu- 

 lar. Elytra moderately long, tapering to acute apices, venation distinct. 



Color: Vertex, pronotum, and scutellum greenish or olive-green, scu- 

 tellum with two light longitudinal lines. Elytra shining dark brown, the 

 nervures lighter, some of the cells, especially along the costa and on the 

 clavus, subhyaline or greenish. Face olive-green, unmarked. 



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

 preceding, broadest basally, lateral margins broadly rounding to slightly 

 produced posterior margin, which has an indistinct median notch; py- 

 gofers rather narrow, slightly exceeded by ovipositor, bearing a few 

 scattered large spines. Male, valve covered by the large ventral segment; 

 plates long and narrow, parallel-margined, obtuse apices somewhat diver- 

 gent; spiny pygofers greatly exceeding plates. 



Internal male genitalia: Styles fastened to a large round lobe at the 

 base of the plates, margins of anterior half sinuately tapering, distal 

 half stout and strongly curved, the large club-shaped and coarsely granu- 

 lar apices strongly diverging; connective small, heart-shaped, with the 

 incision wide and the apex broadly rounding; cedagus very characteristic 

 of the genus, broad basally, narrowing to the middle, distal half with two 

 small ventral sword-like processes and a larger dorsal one, the latter 

 fimbriate apically on the ventral margin. 



Distribution: Specimens have been taken in Cherokee, 

 Bourbon, and Miami counties. It is likely well distributed 

 over the southeastern part of the state. 



Hosts: De Long reports this species as abundant on grasses. 

 Dr. Ball believes wild geranium to be the host plant. 



Acinopterus acuminatus var. viridis Ball. 



Acinopterus acuminatus var. riridis Ball, Can. Ent., xxxv, p. 231, 1903. 



Form: That of typical acuminatiis. 



Color: Entire insect greenish, vertex with a yellowish tinge, ocelli 

 reddish-brown. Nervures of elytra usually dark green, apical nervures 

 sometimes bordered with fuscous. 



Distribution: Our only specimens of this variety have come 

 from Morton county. 

 Hosts: Probably the same as those of typical acuminatus. 



