310 NEARCTIC ERYTHRONEURA (hOMOPTERa) 



Erythroneura tricincta var. cymbium new variety 



Cross-baml one, dusky to black confined to pronotum, profoundly emargi- 

 nate anteriorly, leaving a large part of disk uncolored : cross-band two san- 

 guineous to red, bluish to black on costa; longitudinal color streaks yellow. 



Length, 2.73 mm.; vertex: LM 7, LE 3.5, WA ll.f,, WP 18, OA 6, OP 9, 

 OH 13.5; pronotum: L 9, W 19; tegmen 13-56. 



Type — 9 ; Benton Harbor, Michigan, May 28, 1912, on grape, 

 (E. H. Seigler), [U. S. N. M.]. Paratypes (2.7 to 2.83 mm.), same 

 data as type; Northeast, Pennsylvania, June 6, 1912, (F. John- 

 son), Quaintance No. 6994; Dallas, Texas, September 12, 1907, 

 on grape, (F. C. Bishopp), [U. S. N. M.]. 



Erythroneura tricincta var. disjuncta new variety 



Like the last, but cross-band (if it may be so called) one, broadly interrupted 

 in the middle, covering only sides of pronotum. 



Length, 2.8 mm.; vertex: LM 6.5, LE 3.5, WA 10.5, WP 18, OA 6.5, OP 

 10, OH 14.5, pronotum: L 10, W 19; tegmen 14-57. 



Type — 9; Northeast, Pennsylvania, June G, 1912, (F. John- 

 son), Quaintance No. 6994, [U. S. N. M.]. Parafype—9 ; (2.8 

 mm.)same place and collector as type, June 27, 1912, Quaintance 

 No. 9015. 



Erythroneura comes Say 



T.[etligonia] comes. Say, Thpmas. Desc. New Hem. Ins., Journ.Ac. Nat. 

 Sci. Phila., iv, 1825, p. 343; Compl. Writings, ii, 1859, p. 259. [Missouri.] 



Among species of its group, with third and fourth cross-veins 

 in line approximately at right angles to the radial margin (fig. 12), 

 E. comes is distinguished l)y its basic color pattern of yellow to 

 red, irregular spots, of which three (the upper two sometimes 

 fused) are on clavus, and those on corium tend to be arranged in 

 three oblique series. In some of the varieties these markings tend 

 to be greatly extended, resulting in various distinct color patterns, 

 or to fuse into red, through sanguineous to dusky longitudinal an- 

 gulate vittae. Small tlusky to black dots usually are present in 

 the base of fourth apical cell, in the apices of second and fourth 

 apical cells, and on posterior half of costal plaque; in some varie- 

 ties there are additional dark markings. The black dots or clouds 

 in apices of second apical cells appear to be diagnostic of comes 

 and to afford a means of recognizing the species in the few cases 

 in which the fourth cross-vein is ol)lique, a character which, 

 otherwise, would throw the specimen into the maculata group. E. 

 comes ranges over the whole United States and soutliern Canada. 



