286 NEARCTIC ERYTHRONEURA (iIOMOPTERA) 



Hart collection, and apparently about the same range of color 

 varieties is present in Illinois as in the vicinity of Washington, 

 D. C. 



Key to the Color Varieties 

 A. Tegmina dusky hyaline, or of about uniform color to cross-veins. 

 B. Colors more or less contrasted anterior and posterior to cross-veins. 

 C. Tegmina anterior to cross-veins, solid brigiit to dusky red. 

 D. Vertex and pronotum chiefly red. 



var. accensa new variety, p. 288. 

 DD. Vertex and pronotum chiefly yellow. 



var. accensa new variety, yellow form, p. 288. 

 CC. Tegminal coloration otherwise. 



D. Tegmina to cross-veins diffuse pinkish red to dusky. 



var. abolla new variety, p. 286. 

 DD. Tegmina to cross-veins yellowish hyaline. 



var. abolla new variety, yellow form, p. 286. 

 BB. Color of entire tegmina about uniform dusky hyaline. 



var. iconica new variety, j). 287. 

 AA. Tegmina with more or less distinct longitudinal color vittae. 



B. Vittae reddish var. varia new variety, p. 287. 



BB. Vittae yellowish .... var. varia new variety, yellow form, p. 287. 



Erythroneura abolla var. abolla new variety 



Because most abundant this is considered the typical variety; 

 its type, therefore, is the type of the species. 



The general color varies from diffuse pinkish-red to dusky-hyaline with a 

 pinkish cast, the color extending to or nearly to cross-veins, beyond which 

 the tegmina are hyaline more or less clouded with whitish to dusky; costal 

 plaques whitish opaque. The scutellum and anterior parts in some cases 

 are yellowish, and the red color on tegmina may be almost entirely restricted 

 to the veins, along which it tends to form streaks. Face varying from yellow- 

 ish to pinkish red, sometimes with median vitta and underside of vertex 

 paler; legs pale, they and pleura more or less tinged with same color as face; 

 body slaty with margins and incisures of abdominal segments, and genitalia 

 chiefly paler. 



Length, 2.8:1 nun.; vertex: LM 5.5, LE 3, WA 12, WP 20, OA 6, OP 12, 

 on 17; pronotum: L 12, W 22; tegmen 13-60. 



Type—9 ; Mount Vernon, Virginia, February 28, 1!)15, (L. O. 

 Jackson), [W. L. M.]. 



Other specimens (2.73 to 3.13 mm.) examined were from same locality 

 as the type (W. L. McAfee) ; Branchville, Maryland, and Maywood Virginia, 

 (W. L. McAlec), all on PIjiiih riniiniana, [W. L. IM.]. 



Erythroneura abolla var. abolla, yellow form 



Upper surfa(!e pale yellow, excei)t dark eyes, fcginiiia ycllowisli hyaline, 

 apical cells and small (douds between sectors antei'ior to cross-veins dusky. 



