64 THE UNIVERSITY SCIENCE BULLETIN. 



This species has not yet been reported from the state, but likely occurs 

 here. It is a chestnut brown species with two large, black spots on the 

 vertex, the costal margin of the distal half of the wings has two large, 

 dark-brown spots which are separated by a large hyaline band. Length, 

 5.25 to 5.75 mm. Ball records it as abundant on hawthorn and crabapple. 



Idiocerus provancheri Van D. 



Idiocerus proeancheri Van D., Can. Ent., xxiii, p. HI, 1890. (n. n. for clitellarhis 

 Prov.) 



Bythoscopus clitellarivs Prov., Pet. Faune Ent. Can., iii, p. 288, 1890. 

 Idiocerus provancheri Osb., Proc. la. Acad. Sci., I, pt. 2, p. 126, 1892. 

 Idiocerus provancheri O. & B., 1'roc. Dav. Acad. Sci., VII, p. 127, 1898. 

 Idiocerus provancheri Osb., Me. Agr. Exp. Sta., Bui. 238, p. 77, 1916. 

 Idiocerus provancheri Van D., Cat. Hemip. N. A., p. 580, 1917. 



This is another of the forms which, though not yet reported from 

 Kansas, likely occur here. The females are fulvous brown, the males 

 darker, but both are readily recognized by having broad, yellow stripes 

 on the base of the clavus. Length, 5 to 5.3 mm. Occurs on Cratasgus. 



Idiocerus cratasgi Van D. 



Idiocerus crateegi Van D., Can. Ent., XXII, p. 110, 1890. 

 Idiocerus crateegi O. & B., Proc. Dav. Acad. Sci., VII, p. 128, 1898. 

 Idiocerus crateegi Osh., 20th Rept. N. Y. St. Ent., p. 507, 1905. 

 Idiocerus crateegi Van D., Cat. Hemip. N. A., p. 580, 1917. 



This species will likely be found in the state sooner or later, though 

 it has not yet been taken here. It is slightly smaller than the preceding 

 species, olive drab in color, and at once recognized by the two rows of 

 black spots on the vertex, prothorax and scutellum. Length, 4.75 to 5.25 

 mm. Feeds on Crataegus 



Idiocerus snowi G. & B. 



(PI. 3, figs. 9-11.) 



Idiocerus snowi G. & B., Hemip. Colo., p. 79, 1895. 

 Idiocerus snowi O. & B., Proc. Dav. Acad. Sci., VII, p. 129, 1898. 

 Idiocerus snowi Van D., Cat. Hemip N. A., p. 579, 1917. 



Form: Larger and usually more slender than preceding species. 

 Length, 5.25 to 5.75 mm. 



Color: Pale green except for two small, black spots on vertex, a dark 

 band on sutural margin of elytra from tip of scutellum to tip of clavus. 

 Elytra hyaline and with tips often somewhat dusky or brownish. 



External genitalia: Female, last ventral segment less than three times 

 as wide as long, lateral margins short, broadly curving with posterior 

 margin to point of greatest length of the segment on either side of the 

 broad but shallow median notch. Pygofers large, but exceeded by the 

 ovipositor for more than a third of their length. Male, last ventral seg- 

 ment short except on median line, posterior margin sinuate with a 

 large, obtusely pointed, median tooth; plates rather slender, somewhat 

 exceeding the pygofers. 



Male internal genitalia: Styles large, basal portion slender and 

 straighter, distal portion stout and broadly curved; connective broad, 



