CLEAR-WING MOTHS OF FAMILY AEGERIIDAE 85 



Female. — Same as the male. Anal tuft straight, rounded. 



Expanse : Male 15 to 18 mm., female 18 to 20 mm. 



Distribution. — Temperate North America, Canadian and Hudsonian 

 to Arctic Zone. 



Type. — Female, in the American Museum of Natural History. 



Remarks. — Rearing records associate this species invariably with ab- 

 normal growths on low-growing willows caused by the boring larvae 

 of the beetles Cryptorhynchus lapathi (Linnaeus) and Saperda concolor 

 LeConte and by fungi. C. bolteri has not been reported in heavy 

 infestations throughout its wide range. It is scantily represented, if at 

 all, in most collections. The larvae winter in their burrows and con- 

 struct oblong cocoons in spring, and the moths emerge from late in May 

 to July. Conopia formicaeformis (Esper), of Europe, is a close relative, 

 very similar in appearance and identical in habits. It has the antennae 

 entirely black, not marked with white on the apical third as in bolteri. 

 Records for bolteri: Moshulu, New York, N. Y., 3 females; Ivoryton, 

 Conn., 3 males, 2 females, bred May 19, 1914 (H. Tuschka) ; Ute Trail, 

 Colo., 1 male, 2 females, bred June 19-23, 1914 (H. B. Kirk) ; Brook- 

 ings, S. Dak., 1 female, June 17, 1914; Yakima Indian Reservation, Wash., 

 3,000 feet, 1 female, June 30, 1925 (E. C. Van Dyke) ; Cheboygan County, 

 Mich., 1 male, July 30, 1931 ; Earl Grey, Saskatchewan, 6 males, 4 females, 

 bred July 7-11, 1925 (J. D. Ritchie) ; Hasavich, Manitoba, 1 female, July 

 5, 1910 (J. B. WalHs) ; Lethbridge, Alberta, 1 male, July 28, 1912 (H. L. 

 Seaman) ; Fort Yukon, Alaska, 1 male, 1 female, June 16, 1916; Rampart, 

 Alaska, 1 female, July 1916; Dawson, Yukon, 1 male, June 1916. 



Examples from British Columbia and from Alaska average darker 

 in coloration. 



CONOPIA ACERRUBRI (Engelhardt) 



Synanthedon acerruhri Engelhardt, Bull. Brooklyn Ent. See, vol. 20, p. 64, 192b. — 

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

 of America, pt. 2, No. 8706, 1939. 



The following bibliographical citations under the specific name of "corni 

 Hy. Edwards," as far as can be ascertained, refer to the present species, 

 which invariably has been confused with the true "corni," a borer in the 

 roots of asters. 



Aegeria corni Hy. Edwards, Kellicott, Can. Ent., vol. 24, pp. 46, 210, 1892 ; Insect 



Life, vol. 5, p. 83, 1892. — BEtrrENMiJiXER, Bull. Amer. Mus. Nat. Hist., vol. 4, 



p. 173, 1892. 

 Sesia corni Hy. Edwards, Beutenmuller, Bull. Amer. Mus. Nat. Hist., vol. 8, 



p. 138, 1896; vol. 9, p. 220, 1897; Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, 



p. 296, pi. 31, fig. 17, 1901. 



Male. — Antennae black, more or less tinged with white or pale yellow 

 before the tips, pectinations short and fine. Palpi orange, mixed with 



