Vol. 34, pp. 123-134 June 30, 1921 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



r 



MEMBRACIDAE OF THE VICINITY OF 

 WASHINGTON, D. C. 



BY W. L. McATEE. 



The Membracidae or tree-hoppers, notable for great develop- 

 ment and varied shape of the pronotum, are best collected by- 

 beating shrubs and trees. Vigorous young trees are favored 

 by them and collecting is at its best where new growth is just 

 replacing a cut-off forest. The present list of tree-hoppers of 

 the District of Columbia region is only prehminary, for numbers 

 of species will be added by diligent collecting, as well as by the 

 elucidation of such complex genera as Telamona and Cyrtolobus. 

 Only 46 species are here recorded, while 54 are listed for New 

 Jerseyi and 68 for Connecticut. ^ 



Grateful acknowledgment is made of the assistance of Drs. 

 E. D. Ball and W. D. Funkhouser in clearing up various 

 difficulties encountered in working up the present list. 



Key to the Subfamilies. 

 A. Scutellum covered by the conspicuously developed pronotum. 

 B. Tarsi of equal length or the hind pair longest. 



C. Tibiae simple, never greatly dilated, tegmen chiefly 

 membranous, coriaceous and punctured only at 



base - - .Smiliinae p. 123. 



CC. Front and mid tibiae distinctly dilated 



Membracinae p. 132. 



BB. Hind tarsi shorter than others .Hoplophorinae p. 132. 



AA. Scutellum exposed - Centrotinae p. 132. 



SMILIINAE. 



Key to the Tribes. 



A. Clavus not covered, its inner margin in contact with pronotum. 



Ceresini p. 124 . 



iSmith, J. B. Report on the Insects of New Jersey. Rep. N. J. State Mus. 1909, 

 pp. 90-94. 



zBritton, W. E. Check-list of the Insects of Connecticut. Bui. 31, Conn. Geol. and 

 Nat. Hist Survey, 1920, pp. 53-55, 356. 



25— Proc. Biol. Soc. Wash., Vol. 34, 1921. (123) 



