LEAFHOPPERS OF MAINE. 1 57 



try and differs from the other varieties in the- more distinct yellow color 

 and the small but bright red spoits on the elytra. 



Typlilocyba querci Fitch. 



Typhlocyba querci Fitch Homop. N, Y. State Cab. p. 62, (1851). 

 Typhlocyba querci Gillette Proc. U. S. Nat'l, Mus. XX, 766. (1898). 



White, the elytra semitransparent with three smoky spots in the ends 

 of the discal cells next the cross veins. Length 3 mm. 



Specimens of this species have been taken at Orono, Aug. ist and 

 5th July 29th ; in Deering Park, Portland, Aug. 14th. There is also a 

 specimen in the station collection credited to "Me." but without locality 

 or date. 



The species is known to occur at times in enormous numbers and in 

 such cases must cause a serious drain on the trees affected. While the 

 typical form occurs regularly on oak, specimens of this as well as of 

 the varieties are found on other trees. At Monmouth a number were 

 taken from Buckeye but an oak tree was near at hand amd migration 

 even for nymphs an easy matter. Where so abundant as to require 

 attention kerosene emmlsion or a tobacco solution spray is recom- 

 mended. 



Typlilocyba querci var bifasciata Gillette and Baker. 



Typhlocyba bifasciata Gillette and Baker, Bull. 31, Colo. Agr. Exp. Sta. 



p. Ill, 1895. 

 Typhlocyba querci var bifasciata Gillette Proc. U. S. Xat'l Mus. XX, 



766. 



This well marked variety of querci has been taken im a larger num- 

 ber of localities in the sta:te than the typical querci and while quite 

 common it has not at any place been found swarming in such immense 

 numbers as I have noticed in other states. 



This variety differs from the typical form in the presence of two 

 broad smoky brown or black bands on the elytra. The general color is 

 yellow, the scutellum smoky black. Length 4 mm. 



Specimens have been taken at Orono July 31, Aug. 5tli and 12th; 

 X^orth Harpswell, Aug. 12th; Portland ('Riverton Park) Aug. 14th; 

 Mt, Katabdin, Aug. 22 ; Houlton, Aug. 24th ; Ft. Fairfield, Aug. 26th ; 

 Van Buren, Aug. 27th. 



Typhlocyba lethierryi Edw. 



Typhlocyba lethierryi Edwards. Hemip. -Homop. British Islands, p. 216. 

 Typhlocyba lethierryi Gillette. Proc. U. S. Nat. Museum, XX, p. jyi. 



Similar to rosae but sulphur yellow instead of pale yellow. The 

 bright yellow terminates at aipical cross nervules. Eyes dark and 

 ovipositor black. Length 3.5 mm. 



Our specimens were taken at Orono Aug i8th and 24th, 1914. 

 Edwards states that it occurs on various trees but more particularly 

 on the elm. So far, it has been noticed only in small numbers. 



