CLEAR-WING MOTHS OF FAMILY AEGERIIDAE 109 



Marten, in Thomas, Tenth reixjit of the State entomologist on the noxious and 

 beneficial insects of the State of Illinois, 1880, p. lOQ, 1881. — French, PapiUo, 

 vol. 1, p. 106, 1881. 



Trochilium syringac AIoRRis, Synopsis of the described Lepidoptera of North Amer- 

 ica, p. 139, 1862.— Riley, Insect Life, vol. 6, p. 206, 1894. 



Sesia syringae Boisduval, Histoire nalurelle des insectes : Species general des 

 lepidopteres heteroceres, vol. 1, p. 436, 1874. — Hulst, Bull. Brooklyn Ent. Soc, 

 vol. 5, p. 17, figs., 1882.— Lugger, 2d Ann. Rep. Ent. State Exp. Slat. Univ. 

 Minnesota, 1896, p. 38, 1897. 



Grotea longipes Moschler, Ent. Zeit., Stettin, vol. i7 , p. 313, 1876. 



Podesesia syringae Moschler, Ent. Zeit., Stettin, vol. 40, p. 246, 1879. — Beuten- 

 muller, Ann. New York Acad. Sci., vol. 5, p. 204, 1890; Bull. Amer. Mus. Nat. 

 Hist., vol. 8, p. 125, 1896; vol. 9, p. 219, 1897; Mem. Amer. Alus. Nat. Hist., vol. 

 1, pt. 6, p. 244, pi. 30, fig. 14, pi. 32, fig. 10, 1901.— Packard, 5th Rep. U. S. Ent. 

 Comm., p. 542, 1890.— Kellicott, Can. Ent., vol'. 23, p. 250, 1891 ; Journ. Colum- 

 bus Hort. Soc, vol. 6, p. 62, 1891. — Osbokn, Rep. Iowa State Hort. Soc, Proc, 

 1892, p. 102, 1893.— Webster, Journ. New York Ent. Soc, vol. 5, p. 71, 1896.— 

 McDuNNOUGH, Check list of the Lepidoptera of Canada and the United States of 

 America, pt. 2, No. 8768, 1939. 



Trochiliinn denudatmn Osborn, Trans. Iowa Hist. Soc, vol. 15, 1880, pp. 107-110, 

 1881 ; College Quart., vol. 2, p. 10, 1879 ; vol. 3, pp. 14-33, 1880. 



Sciapteron syringae Hy. EowAitDs, Papilio, vol. 1, p. 184, 1881. — Packard, Insects 

 injurious to forest and shade trees, U. S. Ent. Comm. Bull. No. 7, p. 261, 1881. 



Male. — Antennae strongly bipectinate, rufous, black above. Labial 

 palpus with a heavy brush, dark brown on second joint, terminal joint 

 short, blunt. Head dark brown, posteriorly with a rufous fringe. Collar 

 brown-black. Thorax brown-black marked with chestnut-red laterally 

 and posteriorly. Abdomen somewhat constricted at base, black or brown 

 ish black, not banded, but sometimes with a yellow lateral spot on segment 

 4; anal tuft short and pointed. Coxae of forelegs black, edged with red, 

 femora black, tibiae hairy, orange, tarsi yellow ; posterior tibiae smooth, 

 orange and black ; first tarsal joint very long, deep yellow, terminal joints 

 smooth, pale yellow. Forewing nearly opaque, hyaline between the veins 

 at base, dull black, more or less shaded with chestnut-red, paler beneath. 

 Hindwing transparent, yellowish opalescent, and with scale sufifusions be- 

 tween the veins, heaviest between veins lb and Ic, the veins black and the 

 fringes brown-black. 



Female. — Antennae simple, reddish brown at base, at tip, and beneath, 

 black in the middle above. Posterior tarsus with first joint constrastingly 

 orange and black, terminal joints bright yellow. Otherwise like the male. 



Color variations are increasingly conspicuous toward the southward 

 limits of the species' range. The thorax and abdominal segments 2 and 3 

 may become almost entirely chestnut-red, only narrowly edged with black. 



Expanse : Male 26 to 32 mm., female 32 to 38. 



Distribution. — Eastern half of United States and Canada. For detailed 

 distribution and host records see under the race jraxini. 



Type. — Female. In the Boston Society of Natural History (T. W, 

 Harris, collector). 



