152 



THE UNIVERSITY SCIENCE BULLETIN. 



Distribution: As shown by the map, this species is seemingly 

 more abundant in the eastern part of the state. 



Hosts: Osborn and Ball give Andropogon scoparius as a 

 host, while De Long records it on Aristida gracilis. 



Deltocephalus sylvestris O. & B. 



Deltocephalus sylvestris O. & B., Proc. la. Acad. Sci., iv, p. 213, pi. 25, fig. 4, 1897. 

 Deltocephalus sylvestris Osb., Me. Agr. Exp. Sta., Bui. 238, p. 119, 1915. 

 Deltocephalus sylvestris DeL., Term. St. Bd. Ent., Bui. 17, p. 49, 1916. 

 Deltocephalus sylvestris Van D., Cat. Hemip. N. A., p. 49, 1917. 

 Deltocephalus sylvestris Pent., Ohio Jl. Sci., xviii, No. 6, p. 184, 1918. 



Form: More slender than oculatus. Length, 3.5 mm. Vertex dis- 

 tinctly longer than wide, acutely pointed. Pronotum long, with short 

 lateral margins and distinctly emarginate posterior margin. Elytra long 

 and narrow, distinctly exceeding the abdomen. 



Color: Greenish-yellow marked with fuscous; vertex greenish-yellow, 

 with two brownish lines from apex towards each eye and with a dark 

 median line. Pronotum with traces of five longitudinal lines; elytra 

 greenish, nervures light, sometimes margined with fuscous. Face fus- 

 cous with median line and arcs pale. 



External genitalia: Female, last ventral segment narrowed posteriorly, 

 short, except for long median third which is strongly and abruptly pro- 

 duced and black. Male, valve broad, apex obtusely angulated ; plates very 

 broad, three times the length of valve, spines divergent and acute, mar- 

 gins spiny; bristly pygofers slightly exceeding plates. 



Distribution: Taken only in Douglas and Cherokee counties. 

 Hosts: Osborn and Ball report this species from blue grass 

 in wooded areas. 



