NO. 1140. NOBTH AMERICAN NOCTUIDAE— SMITH AND DTAB. 47 



yellowish wliite. Pencils long, black, double on joints 5 and 7; single 

 on joint 12 as in the mature larva. 



Stage VI. — Head shining black, the sutures pale; width, 4.6 mm. 

 Body greenish white, above marked with a geminate dorsal, a single 

 lateral, and stigraatal black lines, all broken. Subveutral region, feet 

 and venter, with joint 13 above, also sooty black, the legs and plates 

 shining. Hair abundant, about 2 mm. long, not concealing the body, 

 and all of about uniform length, except a few long ones on joint 3, 

 white. Black pencils dorsally on joints 5, 7, and 12, as in the next 

 stage. Length, 45 mm. 



Stage VII. — Head large, rounded, scarcely bilobed, shining black; 

 the clypeus is high, reaching three-fourths the height of the head; the 

 sutures on the sides and the one dividing the two lateral clypeal seg- 

 ments pale yellowish; labrum pale; width, C mm. Body pale greenish 

 white, a series of geminate dorsal dots in the incisures of joints 5 to 

 12, a broad stripe on joints 12 to 13, narrowing in front, a broken 

 obscure stigmatal line and traces of a lateral line posteriorly, as well as 

 the thoracic feet, abdominal leg i)lates, and a broad ventral shade on 

 joints 11 to 13, black. Warts small and obscured by the abundant 

 secondary hairs, which are longer laterally than on the dorsum, diffusely 

 spreading, pointing in all directions, rather short, not concealing the 

 body, white or ^^ale yellow. On joints 5, 7, and 12 wart I bears a long, 

 slender pencil, forming a well-separated paired tuft on joints 5 and 7, 

 consolidated into a single pencil on joint 12. Spiracles white, with 

 black border. Length, 70 mm. 



Cocoon. — Double, a thin outer web of silk and larval hairs and a 

 thick inner cocoon of silk and chips of wood thickly interwoven. The 

 cocoon is formed on a piece of wood, and consists half of the cocoon 

 and half of the cavity in the wood formed by the removal of the chips 

 to construct the cocoon. Length, 40 mm. ; width, 20 mm. 



Pupa. — Shining brown. Wing cases longitudinally grooved and 

 shagreened. Abdomen regularly tapering, the segments smooth and 

 punctured on the anterior portion. Cremaster rounded, blunt, coarsely 

 wrinkled, the upper hooks a dense cluster of three or four, the lower 

 a line of three to five on each side. 



Food plants. — Maple, elm, chestnut, linden, poplar, birch, alder, oak, 

 hickory, ash, sycamore. 



ACRONYCTA HASTULIFERA Smith and Abbot. 



(Plates II, fig. 12, female; III, fig. 5, male adult; VI, figs. 12, 13, larva; XVII, fig. 11, 

 leg; XIX, fig. 14, male genitalia.) 



Phalaena hastiilifera Smith and Abbot, Ins. Ga., 1797, II, p. 183, pi. xcii. 

 Acronycia hastulifera Guen>^e, Spec. Gen., Noct., 1852, I, p. 47. — Walkek, Cat. 



Brit. Mns., Het., 1856, IX, p. .56. 

 Acronycia acericola larva t Guenee, Spec. Gen., Noct., 1852, I, p. 48. 



Ground color a pale gray, almost whitish in the male, with a bluish 

 tinge in the female. The head and thorax slightly powdery, without dis- 

 tinct marking. The j)rimaries have the ordinary maculation mostly 



