158 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BulL 



It occurs in abundance on wild cherry during July and August. 

 New Haven, 26 June, 8 July, 1912 (at light) ; Hamden, 29 June, 1913 

 (B. H. W.) (on linden) ; Manchester, 16 Sept., 1920 (B. H. W.). 



E. ulmi (Linnaeus). Cicada ulmi Linnaeus. Elm Leaf -hopper. 



Syst. Nat, Edn. 10, i, 439, 1758. 



Yellow, vertex with two black spots on anterior margin and a 

 spot on anterior margin of pronotum. Elytra slightly infuscated 

 on cross nervures, tergum black. Length 3.75 mm. 



Originally taken from elm, but it seems to occur on other vege- 

 tation also. 



E. tenerrima (Herrich-Schaeffer). Typhlocyba tenerrima Her- 

 rich-Schaeffer. Typhlocyba rubi Hardy. Typhlocyba misella 

 Boheman. 



Fauna Germ., cxxiv, No. loa; clxiv. No. 16, 1834. 



Yellowish with greenish tint, very slender, a transverse row of 

 dusky blotches on the elytra just before cross nervures. Part of 

 cross nervures black. Length 3 mm. 



A shrub species, on hazel, and occasionally on alder during the 

 summer. 



New Haven, 21 June, 1922 (B. H. W.). 

 E. lethierryi (Edwards). Typhlocyba lethierryi Edwards. 

 Typhlocyba rosae Kirschbaum. 



Ent. Mon. Mag., xvii, 224, 1881. 



Form and size of rosae, but is a uniform sulphurous or orange- 

 yellow without dark markings. Apex of elytra pale. Length 

 3.5 mm. 



Reported from elm, but is found on maple and other trees in 

 small numbers. 



New Haven, 8 July, 1912 (at light). 

 E. rosae (Linnaeus). Cicada rosae hinnaeus. Typhlocyba pteri- 

 dis Dahlbom. Rose Leaf-hopper. 



Syst. Nat., Edn. 10, i, 439, 1758. 



Pale yellow to milky white, without dark markings above. The 

 tarsi, tip of proboscis and eyes usually brown. Upper portion of 

 face often darker. Length 3.25-3.5 mm. 



A very common and destructive pest on roses and' frequently 

 feeds on apple foliage so as to cause severe injury. 



Yalesville, 19 Oct., 1903 (H. L. V.) ; New Haven, 3 Oct., 1902 

 (B. H. W.) ; 16, 31 Oct., 1903 (H. L. V.) ; 27 June, 1916 (B. H. W.) ; 

 4 Aug., 30 Oct., 1920 (B. H. W.) ; Orange, 15 Sept., 1920 (B. H. W.) ; 

 Guilford, 17 July, 1920 (B. H. W.) ; New Haven, 4 July, 1921 (B. H. W.). 



E. fabae (Harris). Tettigonia fabae Harris. Bean-Vine Leaf- 

 hopper. 



Rept. Ins. Mass., 186, 1841. 



Head crescent-shaped, the male with two long thin recurved 

 plates. Color uniformly pale green, the wings and wing covers 

 transparent and colorless. Hind tarsi bluish. Length 3.5 mm. 



