W. L. MC ATEE 291 



AA. Tegmiiia with other markings. 



B. Tegminal color markings chiefly red. . var. illinoiensis Giflctto, p. 292. 

 BB. Tegminal color markings chiefly yellow. 



var. illinoiensis Gillette, yellow form, p. 291. 



Erythroneura illinoiensis var. illinoiensis Gillette 



Since the red-spotted form of illinoie^isis was evidently con- 

 sidered typical by Gillette (vide locicit.), the name illinoieiiKis as 

 a varietal term is hereby restricted to that form. 



General color pale yellow, the sc^utellum and parts anterior often being 

 ivory color to livid, with flecks or streaks of pale yellow; vertex, proncjtum 

 and scutellum each with a large round spot of bright red, discal in the first 

 two parts of body and apical on last; clavus with a spot near base and apex 

 and a streak along inner side: corium with basal spot, streak along costa, on 

 first cross- vein and on second and third sectors, the last three spots in a step- 

 like series, the inner spot farthest cephalad, red; large black spot on corium 

 ocellate with orange-red (in some specimens the colors appear as if they had 

 "run" from the spots, giving a difl'usely streaked appearance); apical cells 

 yellowish fumose; underside pale yellow except face which sometimes is 

 rather livid; legs stramineous excejjt for dark claws. 



Length, 2.8 mm.; vertex: LM 7, LE 4, WA 10, WP 17, OA 5, OP 8, OH 

 14; pronotum: L 10, W 19; tegmen 13-57. The supposed type specimen 

 being in poor condition description and measurements are taken from a 

 female specimen, colkM-ted at Plummer's Island, Maryland Dec. 14, 1913, 

 (W. L. McAtee). 



Gillette undoubtedly intended Illinois to be the type locality 

 of the species he named for that state, although he does not specifi- 

 cally say so. The type is recorded simply as No. 3446 U. S. N. 

 M. There is no specimen from Illinois in the National Collec- 

 tion, 1)ut there are four specimens bearing type numl)er 3446. 

 Three of these are from the lot without locality, but lal)elled "On 

 Vogelleim grape," mentioned by Gillette, but these belong to the 

 two forms hereafter described. The remaining specimen bear- 

 ing the type label is of the typical variety; it was collected at 

 Agricultural College, Mississippi, Oct. 27,' 1894, by H. E. Weed. 

 It must therefore Ije regarded as the type of illinoiensis, unless an 

 Illinois specimen with better credentials he discovered. 



Other specimens (2.7 to 2.9 mm.) of the typical variety examin- 

 ed were collected at Washington and Anacostia, District of Col- 

 uml)ia; Plummer's Island, and Belts ville, Maiyland; May wood, 

 Mrginia, and Oxford, Indiana. 



TRANS. AM. ENT. SOC, XLVI. 



