156 MAINE AGRICULTURAL EXPERIMEXT STATION. I915. 



This species is less common than the comes which is so universally 

 common on grape but it sometimes appears in large numbers. The 

 Maine specimens are recorded for June 11 as taken from "sweet grass," 

 but it is probable that they had scattered from some other plant. 



Typhlocyha viilneraia Fitch. 



Erythroneura ritlncrafa Fitch. Homop. N. Y. State Cab. p. 62, 1851. 

 Typhlocyha viilnerata Gillette. Proc. U. S. Natl. Mus. XX. 



Dark gray or purplish with yellow spot and some slender red lines, 

 with a dark spot at end of clavus. Length, 3.5 mm. 



This species appears to have been rarely observed in the state though 

 in other parts of the country it is often abundant. One record for 

 Orono, Aug. 22nd, 1911. 



The Grape Leafhopper. 



Typhlocyha comes Say. 



Typhlocyha comes Say. Jour. Acad. X. S. Phila. IV, p. 343 (1825). 

 Erythroneura vitifex "Fitch. Tr. X^. Y. Sitate Agr. Soc. XVI, p. 392 



(1856). 



Minute pale yellow with bright red spots and three black points on 

 the elytra. Length 3 mm. 



This is the very common and widely distributed species occurring on 

 grape vines and it doubtless occurs everywhere in the state where 

 grapes are grown. Records run north to Ft. Kent. It has not been 

 observed in as great abundance here as in some other parts of the 

 country but I have not had opportunity to inspect vineyards to any 

 great extent and cannot assume that there is any lack of abundance as 

 a general thing. 



Where grape growing is of importance attention to the ordinary 

 means of control is desirable. Spraying with the tobacco decoctions 

 or extracts and the shield method of capture are the main reliance. 



The species is a variable one but Gillette has considered the vitifex of 

 Fitch as covered by the original description of comes of Say. 



Typhlocyha comes var, sicsac Walsh. 



Erythroneura sicsac Walsh Proc. Bost. Soc. Nat. Hist. IX, p. 317, 1864. 

 Typhlocyha conies variety zicsac Gillette Pr. X'at'l Mus. XX, 761. 



This variety of comes has been taken abundantly from Cornus at 

 Orono in July, 1914. It differs from the typical form in the zigzag 

 brown marking of the elytra which are darker than in the vitis form. 



Typhlocyha comes var vitis Harris 



Tettigonia viiis Harris. Enc. Am. VIII, p. 43, 1831. 

 Typhlocyha comes var vitis Harris Gillette. Pr. U. N. AI. XX, p. 760. 

 This is probably the most common variety in this section of the coun- 



