502 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 14 



LEAFHOPPERS INJURING WOODBINE 



By Geo. W. Barber, Cereal and Forage Division, U. S. Department oj Agriculture 



For the past two years the writer has noticed, from time to time, 

 in several locaHties in Eastern Massachusetts, American Woodbine, 

 Speurer spp. (Ampelopsts, Parthenocissus), injured by leafhoppers. 

 During the season of 1920 it has been possible to determine the species 

 concerned and to learn something of their life-histories and habits. 

 The following species are recorded: 

 Erythroneura comes var. comes Say. 

 Franklin, Aug. 22, 1920. 



Erythroneura comes var. ziczac Walsh. 



Arlington, June 3-14, 1920; Franklin, Aug. 22, 1920. 



Erythroneura comes var. elegans McAtee. 



Lexington, April 16, 1920; Franklin, May 30, 1920; 

 Arlington, June 10, 1920; Franklin, Aug. 22, 1920; 

 Cambridge, Aug. 1919. 



Erythroneura vulnerata var. vulnerata Fitch. 



Franklin, May 30, 1920; Arlington, June 10, 1920; 

 Franklin, Aug. 22, 1920. 



Erythroneura vulnerata var. nigra Gillette. 



Arlington, June 3, 1920; Sudbury, July 6, 1920; 

 Franklin, July 28, 1920; and Aug. 26, 1920; 

 Lexington, July 28, 1920; Woburn, Sept. 3, 1920. 



Of these form.s E. vulnerata var vulnerata and E. comes var. elegans were 

 throughout the season most numerous in the several localities, both 

 being found together. E. comes var ziczac was at times abundant but 

 E. comes var. comes and E. vulnerata var. nigra were infrequently seen 

 and doubtless were present in sm^all numbers. 



The leaves by midsummer appear blotched and discolored, beginning 

 to fall by the last of June. The continual falling of leaves is the most 

 disagreeable feature of the insect attack where the plants are growing 

 as shade for porches and simimer houses. 



Both species probably spend the winter as adults, since they were 

 both taken in May to June before n\Tnphs were in evidence. At that 

 time the adults were few in number but by the middle of July were 

 very nimierous, together with nymphs of all stages. By September 

 several instances were noticed where the remaining leaves on certain 



