No. 34-] HEMIPTERA OF CONNECTICUT: PSYLLIDAE. 245 



Key to Species. 



1. Wings without conspicuous dark band 2 



Wings with conspicuous dark submarginal band across apical half 



of wing f ascipennis 



2. Female with dorsal plate of c'auda strongly arched, curved down- 



ward at tip calthae 



Female with dorsal plate nearly straight lined .veaziei 



A. fascipennis Patch. 



Me. Agr. Expt. Sta., Bull. 202, 217, 1912. 



Nymphs and food plant are not known. 

 A. calthae (Linnaeus). Aphalara polygon* Foerster (Patch 

 1911). 



Fauna Suec, Edn. 2, 263, 1761. 



Nymphs feed upon Polygonum, most numerous at leaf axle. 

 A. veaziei Patch. 



Me. Agr. Expt. Sta., Bull. 187, 16, 191 1. 



Nymph and food plant not known. Adults commonly taken on 

 Solidago. 



New Haven, 8 June, 1904; on Solidago, Stafford, 24 Aug., 1905 

 (W. E. B.). 



Fig. 22. Wing of Trioza tripunctata Fitch. Greatly enlarged. Drawing 

 by Dr. Edith M. Patch. 



Trioza Foerster. 



Key to Species. 



Fore wing heavily shaded along veins ; M and Cu both branching 

 very near margin of wing. Fig. 22 tripunctata 



Fore wing with veins not shaded; three dark marginal dashes 

 between anterior branch of M and posterior branch of Cu. 

 Neither M nor Cu branching near margin of wing obtusa 



tripunctata (Fitch). Psylla tripunctata Fitch. Psylla rubi 

 Walsh and Riley. (Fig. 22.) 



