No. 34-] HEMIPTERA OF CONNECTICUT: CICADELLIDAE. 65 



I. nervatus Van Duzee. 



Bull. Buff. Soc. Nat. Sci., v, 194, 205, 1894. 



One of the smallest of the group, pale in color, green or often 

 yellow, without definite dark markings on vertex. Elytra hyaline 

 with dark wing nervures showing through. Length 4.5-4.75 mm. 



Common in swampy land on willow shrubs, being limited in its 

 distribution by the species of willows upon which it feeds. 



Portland, 24 June, 1921 (B. H. W.). On poplar. 

 I. pallidus Fitch. BytJioscopus obsoletus Walker. 



Homop. N. Y. St. Cab., 59, 1851. 



Larger than nervatus but similar in color, pale green, yellowish, 

 or often white, unmarked. The nervures of the wings usually not 

 distinct through elytra. Length 6 to 6.5 mm. 



Abundant on willows and poplars. The adults can be found 

 feeding on shrubs in May, June and July. It is a species dis- 

 tributed through the New England States, and should occur in 

 good numbers. 



New Canaan, 3 Sept., 1920 (B. H. W.) ; Stratford, i Sept., 1920 

 (B. H. W.) ; New Haven, 22 Aug., 1920, 19 June, 1921 (B. H. W.) ; Ham- 

 den, 18 July, 1920 (B. H. W.) ; Norwalk, 8 Sept., 1920 (B. H. W.) ; North 

 Branford, 13 July, 1920 (B. H. W.) ; Cornwall, 18 July, 1921 (B. H. W.). 



I. provancheri Van Duzee. BytJioscopus clitellarius Provancher. 



Can. Ent., xxii, iii, 1890; Pet. Faune Ent. Can., iii, 288, 1890. 



Very strikingly and conspicuously colored. Shining reddish 

 brown with a bright yellow area on basal portion of clavus along 

 claval vein. Two large round black spots on vertex, elytra reddish 

 brown more hyaline on posterior half, smoky at tips. Length 

 5-5-5 mm. 



Common on hawthorn and other species of Crataegus. It has 

 also been taken from oak and hickory. Occurs throughout the 

 New England States, and is reported from Connecticut. 



New Haven, 17, 27, 31, 22 Aug., 1920, 25 June, 18 Sept., 1921 (B. H. W.). 

 On chokeberry, Pyrus arbutifolia. 



I. scurra (Germar). Jassus scurra Germar. Jassus crenatus 

 Germar. Idiocerus germari Fieber. Idiocerus gemmisi- 

 mulon Leonard and Crosby. 



Fauna Ins. Eur., xvii, 11, 1834. 



Rather large and robust, dull brown shading to yellow, usually 

 with a well defined band on vertex between the eyes. Elytra with 

 veins often alternating pale and dark. Claval veins usually pale 

 along suture. Rather irregular dark markings on pronotum and 

 scutellum. Length 6-7 mm. 



An European form apparently introduced into this country, and 

 now with rather wide distribution. It feeds on species of Populus, 

 and has been taken as adult in April, May, September and October, 

 thus it would appear to be two-brooded. 



3 



