No. 34-] HEMIPTERA OF CONNECTICUT: CICADELLIDAE. 63 



An European species recently reported for this country where 

 it occurs in abundance on Populus alba. It is easily separated 

 from verticis, which it resembles, by the lack of antennal discs. 



New Haven, 27 June, 29 July, 3 Oct., 1920 (B. H. W.), Stratford, i, 15 

 Sept., 1920 (B. H. W.), Hamden, 11 June, 1921 (B. H. W.) ; New Canaan, 

 3 Sept., 1920 (B. H. W.). On poplar. 



I. crataegi Van Duzee. 



Can. Ent., xxii, no, 1890. 



Very distinctly marked, greenish yellow to brown with a pair 

 of dark spots on vertex, anterior border of pronotum and basal 

 angles of scutellum. Elytra yellowish hyaline with dark veins. 

 Length 4.75-5.25 mm. 



As its name would indicate this species occurs on different 

 species of Crataegus. It is a typical northern form and is common- 

 in New England. 

 I. duzeei Provancher. Idiocerus perplexus Gillette and Baker. 



Pet. Faune Ent. Can., iii, 292, 1890. 



Resembling pallidus, a little larger, pale, with golden iridescent 

 elytra, fuscous at apex. Length 6-7 mm. 



This is apparently a rather rare species in New England, but 

 should be found in the state. It occurs on poplars and especially 

 Cottonwood. 



Portland, 25 July, 1920, 24 July, 1921 (B. H. W.). 

 I. fitchi Van Duzee. Idiocerus maculipennis Fitch. 



Can. Ent, xli, 383, 1909; Homop. N. Y. St. Cab., 59, 1851. 



Chestnut brown, two black spots on vertex. Pronotum with an 

 irregular black blotch on anterior margin behind either eye. 

 Elytra brownish hyaline, nervures dark brown, a broad milky white 

 band along claval vein curved to commissural line at half its 

 length ; middle of costal margin and apex black or brown. Length 

 5-5.5 mm. 



Common throughout the state on Crataegus and apple. 



New Haven, 3 Aug., 1909, 8, 25 July, 1912, 20, 22, 26, 27 June, 1914 

 (B. H. W.) ; 28 July, 8 Aug., 1920 (on apple), Wallingford, 8, 28 July, 

 1912 (D. J. C.) ; Manchester, 30 Aug., 1912 (H. B. K.) ; Portland, 25 

 June, 1922 (M. P. Z.). 



I. lachrymalis Fitch. (Fig. 5, 6.) 



Homop. N. Y. St. Cab., 58, 1851. 



Large, particularly female specimens, varying from yellow to 

 brown or slate color. A transverse band on vertex between eyes, 

 and a spot next either eye dark. Basal angles of scutellum and a 

 median stripe forming a spot on disc, brown. Nervures of elytra 

 dark brown. Length, male 5.5 mm., female 7 mm. 



A common species in New England and the Northern States, 

 feeding upon cottonwood and other poplars. 



Portland, 25 July, 1920 (B. H. W.) ; New Haven, 19 June, 1921 

 (B. H. W.). On poplar. 



