114 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



latter with an orange lateral patch beneath the wing bases. Abdomen 

 slender, lustrous coppery, segments 2 and 3 orange at the sides, segment 4 

 orange above and beneath ; anal tuft wedge-shaped, narrow and long, light 

 brown at tip beneath. Legs with coxae black ; tibiae bright orange through- 

 out ; first joint of posterior tarsus orange, the other joints black. Forewing 

 hyaline; veins, costa, and very narrow outer margin black, discal mark 

 narrow, outwardly edged with orange, wing base and costa dusted with 

 orange; underside pale yellow along costa to wing base. Hindwing with 

 very small black discal mark, costa pale yellow to wing base, above and 

 beneath, fringes brownish black. 



Female. — Similar to male. Antenna simple, apical one-third pale yellow. 

 Anal tuft straight, blunt. 



Expanse : Male 23 to 24 mm., female 18 to 24 mm. 



Distribution. — Northern New Jersey ; New York, in the Catskill and 

 Adirondack Mountains ; New Hampshire ; Massachusetts ; Vermont ; 

 Maine ; Ontario and Quebec, Canada. 



Type. — Female. In the Boston Society of Natural History. From 

 Massachusetts (May 25, 1826). 



Remarks. — All records for this species, the only one indigenous to 

 eastern North America with the food plant still unknown, are captured 

 specimens taken one at a time, usually on flowers or herbage. The geni- 

 talia unite it so closely with ainericana, the western bark borer on alder, 

 that it would not be surprising if jiilvipes should prove to be a bark borer 

 on alder in the East. 



THAMNOSPHECIA SCITULA SCITULA (Harris) 



Plate 8, Figures 41, 41a; Plate 14, Figure 71 ; Plate 25, Figure 152 



Aegeria scitula Harris, Amer. Journ. Arts and Sci., vol. 36, p. 313, 1839. — Walker, 



List of the specimens of lepidopterous insects in the collection of the British 



Museum, pt. 8, p. 45, 1856. — Beutenmuller, Bull. Amer. Mus. Nat. Hist., vol. 



6, p. 94, 1894. 

 Trochilium galUvorum Westwood, Gard. Chron., vol. — , p. 757, 1854; Proc. Ent. 



Soc. London, ser. 2, vol. 3, p. 21, 1854.— Hy. Fdvvards, Papilio, vol. 2, p. 96, 1882. 

 Trochilium scitula Morris, Synopsis of the described Lepidoptera of North America, 



p. 141, 1862. 

 Trochilium hospes Walsh, Proc. Ent. Soc. Philadelphia, vol. 6, p. 270, 1866. 

 Sesia scitula Boisduval, Histoire naturelle des insectes : Species general des 



lepidopteres heteroceres, vol. 1, p. 439, 1874. — Beutenmuller, Bull. Amer. Mus. 



Nat. Hist, vol. 8, p. 139, 1896; vol. 9, p. 200, 1897; Mem. Amer. Mus. Nat. Hist., 



vol. 1, pt. 6, p. 298, 1901. 

 Aegeria gallivora Grote, New check list of North American moths, p. 12, 1882. — 



Kellicott, Can. Ent., vol. 24, p. 45, 1892. 

 Aegeria aemiila Hy. Edwards, Papilio, vol. 3, p. 155, 1883; Ent. Amer., vol. 3, p. 



224, 1888. 

 Sesia hospes Packard, 5th Rep. U. S. Ent. Comm., pp. 217, 328, 596, 1890. 

 Synanthedon scitula McDunnough, Check list of the Lepidoptera of Canada and the 



United States of America, pt. 2, No. 8731, 1939. 



