276 NEARCTIC ERYTHRONEURA (hOMOPTERa) 



may prove to be a distinct species. At any rate, information is 

 much needed relating to the status of E. ohliqua west of the con- 

 tinental divide. 



Key to the Color Varieties 



A. Color markings present. 



B. Color markings more or less run together, especially on vertex and 

 pronotum, forming a dorsal stripe. 

 C. Stripe on tegmina confined to (davi, whicli are red, the remainder 

 of tegmina being sulphur yellow . . . .var. clavata DcLong, p .278. 

 CC. Stripe on tegmina otherwi.se. 



D. Stripe on tegmina, not of uniform width, oljviously made up of 

 two heavy vittae, the claval and corial. 

 E. Stripe chiefly red on head and pronotum. 



var. dorsalis Cillette, p. 278. 

 EE. Stripe chiefly dark on head and pronotum. 



var. dorsalis Gillette, dark form, p. 279. 

 DD. Stripe on tegmina continuous, more nearly of uniform width. 

 E. Strijie dusky to l)laek throughout. 



var. stolata new variety, p. 279. 

 EE. Stripe bright retl along margins, duskier red within. 



var. aucta new variety, p. 279. 

 BB. Color markings chiefly in the form of distinct vittae. 

 C. Scutellum dark or with dark markings. 



D. Scutellum with two black triangles at base. 



var. parma new variety, p. 280. 

 DD. Scutellum and sometimes adjacent parts of thorax .smoky to 

 black. 

 E. Tegminal vittae chiefly red .... var. noevus Gillette, p. 2S0. 

 EE. Tegminal vittae chiefly yellow. 



var. noevus Gillette, yellow form, p. 280. 

 CC. Scutellum without dark markings. 



D. Dorsum of abdomen usually dark or with a distinct dark ])lolch 

 showing through the tegmina, ground color of scutellum and 

 pronotum also, often darker. 

 E. Dusky markings, if any, on tegmina, in form of cros.s-bands; 

 apical cells entirely dusky. 

 F. 'I'egminal vittae red; apical cells often very ilark. 



var. fumida Gillette, p. 281. 

 FF. I'egminal vittae yellow. 



vnr. fumida C!illelte, yellow form, p. 282. 

 El']. TcgmiiKi witli l)roa(l longitudinal dusky vittae; third ;ind 

 fourth apical cells abruptly hyaline. 



var. electa new variety, p. 282. 

 DD. Dorsum of abdomen usuall\' pale; ground color of sculclhnn .•iiid 

 |)ronotum paler. 

 10. Sculclluiii chicliy deep onuige. . var. pclta new variety, p. 278. 



