290 NEARCTIC ERYTHRONEURA (hOMOPTERA) 



Length, 2.8 mm.; vertex: LM 6.5, LE 3.5, WA 14, WP 21, OA 7, OP 12, 

 OH 16; pronotum: L 11, W 21; tegmen 14-56. 



Type—d"; Plummer's Island, Maryland, Dec. 14, 1913, (W. 

 L. McAtee), [W. L. M.]. Parahjpes—i2M to 2.97 mm.), both 

 sexes, from same locality, October, November, and from Mary- 

 land near Plummer's Island, July, August and September 



Erythroneura aclys new species 



Base of fourth apical cell angulate, vertex rather pointed; color pattern 

 consisting of a broad brown to black stripe extending whole length of insect, 

 margined by pale yellow. The dorsal stripe nearly black on scutellum and 

 anterior parts sharply cut off from a pale yellow margin about the width of eye; 

 on tegmina the stripe is smoky brown, greatly expanded and irregularly set off 

 from the pale yellow costal margin, percurrent to second apical cell which is 

 about the width of costal plaque; the latter has a slight opaque whitish coat- 

 ing, is margined interiorly and anteriorly by reddish, and underlaid poster- 

 iorly by blackish; there are touches of red upon apex of clavus and first cross- 

 vein and more or less hyaline spots at extremities of apical third of clavus, 

 on the corium nearby and in middle of fourth apical cell. The legs, i)leura 

 and face vary from flesh-color to i)ole yelloAV, and the venter is pale yellow 

 with a median series of slaty spots, the posterior ones extending entirely 

 across last abdominal segment and across base of genitalia; dorsum slaty. 



Length, 2.64 mm.; vertex: LM 7, LE 3, WA 11, WP 17.5, OA 5, OP 10, 

 OH 16; pronotum: L 11, W 20; tegmen 13-55. 



Type — cf ; Plunnnei-'s Island, Maryland, December 21, 1913, 

 (W. L. McAtee), [W. L. M.]. 



Erythroneura illinoiensis Gillette 



Tiji)hIocyh(i illinoiensis. Gillette, C. P. Am. Tyjihlocybinae, 189S, pp. 

 758 to 759. [Illinois, Mississippi, Michigan.] 



This species is recognizable by the narrow fourth apical cell, 

 distinctly angulate at base (fig. 10), and the color pattern of chiefly 

 discrete spots, three large round ones of which are on the median 

 line of v(U'tex, pronotum and scutellum, and a large black one on 

 coi'ium is usually ocellate with yellow or red. The latter spot, 

 not ocellate, is the best mark for recognition of the pale variety 

 of illirioieriHls. Thc^ known I'ange of the si)ecies extends from New 

 Yoik and Michigan to Kansas, Mississippi and North Carolina. 



Key to the Color ]'<tncties 



A. Tegmina practically without color iii;irkiiigs other than the three black 

 dots on each var. spectra new variety, p. 292. 



