No. 34-] HEMIPTERA OF CONNECTICUT I CICADELLIDAE. 67 



to a few species of trees. A great many occur on willows and 

 poplars, a few on wild plum and honey locust. So far as known 

 they are single-brooded, the adults being found in June and early 

 July. 



Key to Species. 



1. General color above greenish or yellowish to orange, often with 



dark markings 2 



General color above brownish or fuscous, sometimes marked with 



green .or yellow 9 



2. Elytra greenish hyaline, or rather uniform brownish in the male 3 

 Elytra with dark markings maculate or in the form of bands 5 



3. Tip of vertex without black markings 4 



A black spot at the pointed tip of vertex, propleurae unmarked 



virescens var. graminea 



4. Male bright green with a black spot on propleura, length 5-6 mm. 



viridis 

 Male without spot on propleura, elytra tinged with fuscous, less 

 than 5 mm. in length gleditschiae 



5. Elytra without distinct transverse hyaline bands 6 



Elytra with transverse hyaline bands crossing clavus 7 



6. Entire clavus and margin of suture to apex of corium black suturalis 

 Definite brown band across base of clavus and scutellar region basalis 



7. Elytra with two transverse hyaline bands 8 



Elytra reddish brown with a single hyaline band across nervures 



at base of anteapical cells ferrugineoides 



8. Elytra broad, propleurae without black markings, no black spots 



in basal angles of scutellum .canadensis 



Elytra narrower, propleurae and angles of scutellum with black 

 spots bifasciata 



9. Elytra brownish with two or three pale spots, scutellum with a 



black spot in either basal angle trimaculata 



Elytra deep reddish brown, scutellum rather uniform in color sordida 



M. gleditschiae (Osborn and Ball). Pediopsis gleditschiae 

 Osborn and Ball. 



Proc. Dav. Acad. Sci., vii, 67, 122, 1898. 



Resembling viridis but smaller, stout, elytra of the males washed 

 with fuscous. Propleura unmarked. Length 4-4.75 mm. 



Found on honey locust from which plant it derives this name. 

 A rather common species in the south and occasionally found 

 farther north, the range and abundance depending largely upon 

 the distribution of its food plants. 



New Haven, 29 July, 1920 (B. H. W.) ; 8 Aug., 1920 (B. H. W.). 

 Honey locust. 



M. virescens (Gmelin) var. graminea (Fabricius). Cicada 

 graminea Fabricius. 



Ent. Syst., Suppl., 521, 1798. 



Typical virescens is smaller than viridis, very narrow with a 

 black spot at the base of hind tibia. The more common form is 

 the variety graminea, which is conspicuously marked by a black 

 spot at the tip of the angled apex. Otherwise the color is uniform 

 greenish or yellowish, often sordid green. Length 5 mm. 



An European form occurring in New England. 



