l6o CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



Uniform dull smoky without median stripe obliqua var. fumida 



II. Very black with a white spot on basal angle of scutellum 



vulnerata var. nigra 

 Dark but not black, without spot on scutellum vulnerata 



E. trifasciata (Say). Tettigonia trifasciata Say. 



Jour. Acad. Nat. Sci., Phila., iv, 343, 1825. 



Yellowish, vertex, pronotum and scutellum marked with red, 

 elytra anterior to cross veins irrorate with red and with three 

 rather indefinite brownish or smoky bands behind scutellum. A 

 median white spot on costal margin. Length 3.5 mm. 



It occurs on leaves in woods and in the southern states is 

 common on grapes. 



Norwalk, 8 Sept., 1920 (B. H. W.). 

 E. tricincta Fitch. Three-banded Leaf -hopper. (Fig. 14, 8.) 



Homop. N. Y. St. Cab., 63, 1851. 



Yellowish, with three brown or reddish transverse bands, one 

 across pronotum and part of scutellum, a second on middle of 

 elytra and a third across apex of elytra. Length 3 mm. 



A common vineyard pest and found on other vines and trees 

 often in goodly numbers. 

 E. tunicarubra (Gillette). Typhlocyba tunicarubra Gillette. 



Proc. U. S. Nat. Mus., xx, 752, 1898. 



Yellowish, vertex, pronotum and scutellum often with faint red 

 markings, elytra solid reddish to cross veins. Resembles some- 

 what trifasciata in which the elytra are maculate to cross veins 

 instead of a uniform red. Length 3.75 mm. 



Rather uncommon, occurring on foliage in woodland. 

 E. hartii (Gillette). Typhlocyba Mrtii Gillette. 



Proc. U. S. Nat. Mus., xx, 754, 1898. 



Vertex, pronotum and scutellum yellowish marked with red. 

 Elytra red almost to cross veins, a circular spot on middle of clavus 

 along suture, and costa narrowly yellow. Length 3 mm. 



Usually seen in goodly numbers, when present, on the trunks of 

 young apple trees. It is often found to be a pest of apples, 

 occurring in large numbers. 



E. comes (Say). Tettigonia comes Say. Grapevine Leaf- 

 hopper. 



Jour. Acad. Nat. Sci. Phila., iv, 343, 1825. 



Extremely variable in color. Yellow to white usually with red 

 lines or blotches on vertex, pronotum and scutellum. Elytra with 

 oblique and transverse reddish lines of various shapes and sizes, 

 often coalescing or on the other hand broken into distinct spots. 

 Length 3 mm. 



This species with its several so-called varieties is known as the 

 "grape leaf-hopper," and wherever vineyards are found or even a 

 wild grapevine in wooded areas this species is in great abundance. 



