LEAFHOPPERS OF MAINE. 93 



Pcdiopsis bifasciafa Van Duzee. 

 Pediopsis bifasciata Van Duzee. • Entomologica Americana V. 173. 



Gray brown with two fairly distinct bands across the elytra. Length 

 5 mm. There is considerable variation in different specimens in my 

 collection but the three Maine specimens collected at Orono on poplar 

 July ;iO, are quite uniform and all are a little more gray and with the 

 two bands more clearly outlined than in most specimens. 



The species is credited to cottonwood and poplar but it is apparently 

 of infrequent occurrence and may be considered as of little economic 

 importance. 



Pediopsis canadensis Van Duzee. 

 Pediopsis canadensis Van D. Canad. Ent. XXII, p. iii, 1890. 



Greenish or reddish yellow, the elytra brownish with two light bands, 

 one near the base, the other across the apex of the clavus. Length 

 4.75 mm. 



Maine specimens of this species were collected at Orono July IT, 12 

 and 19, 1914 and have the typical characters of the species, one of the 

 specimens being distinctly reddish brown. It is evidently much less 

 common than some of the other species and it may be considered as 

 having little or no economic importance. 



Idiocerus pallidus Fitch. 

 Idiocerus pallidus Fitch. Homop. N. Y. State Cab. p. 59 (1851). 

 Idiocerus pallidus Osborn and Ball, Pr. Dav. Acad. Sci. VII, 135. 



Light green fading to greenish white in preservation, with two black 

 points on the vertex, otherwise unmarked. Length 5-6 mm. 



Common on willows and occurring generally over the state, in some 

 cases taken also from poplar. Orono on poplar and willow July 30th 

 and Aug. 5th larva, Portland Aug. 13th, willow, Highmoor Farm Aug. 

 iSth, poplar, Mt. Katahdin Aug. 22nd, willow, Houlton Aug. 24th, Mars 

 Hill Aug. 25th, Ft. Fairfield Aug. 26th, willow and poplar. Ft. Kent 

 Aug. 28th, 29th. 



On account of its very general occurrence and the great abundance of 

 the species feeding through larval stages on willow and poplar it must 

 be counted of economic importance wherever these trees have any com- 

 mercial or landscape value. 



Idiocerus alternatus Fitch. 



Idiocerus alternatus Fitch. Homop. X. Y. State Cab. 59 (1851). 



Idiocerus alternatus Osborn and Ball. Pr. Dav. Acad. Sci. VII, 131. 



Gray with interrupted black and white veins, two conspicuous black 

 dots on the vertex. Length 6 mm. 



