373 _ 



"The stigmata arc annulated with black, and obliquely above and forward 

 of each are two small brown dots. The lateral tufts are below the stigmata, 

 and each is composed of from seven to nine long hairs, which, under the lens, 

 are remotely pectinate. A little above and back of each of these tufts is a semi- 

 circle of fine, scale-like bristles. The prolegs are very short. 



"Pupa: Length, 0.25. Swollen and blunt anteriorly. Color pale fulvous, 

 with a roseate hue on dorsum. Dorsal surface beset with tufts of dingy hairs, 

 with a lateral fringe of single straight hairs, which serve to secure it more firmly 

 to the mat of silk upon which it rests. Dorsum marked, near the head, with 

 two large dull-brown spots, and an indistinct longitudinal stripe of same color 

 on the abdomen. On either side of the thorax is a small, velvety dark brown 



dot. 



*********** 



"It feeds on the Rag-weed (Ambrosia artemisiacfolia), and I have only 

 found it late in the season." 



Dr. McDunnough has communicated to us the following notes : 



"Murtfeldt's description is, on the whole, good. Tubercles I and II are 

 raised, conical, brown, with short recurved setae. The two black dots between 

 tubercles II are characteristic but piliferous process mentioned could not be 

 seen; there is a short seta projecting forward and lying flat on the body sur- 

 face, arising from just before tubercle 1 and there is often another behind H. 

 but none arising from the spots themselves. Area around tubercles often with 

 numerous round minute glandular processes, much like mushrooms. Tubercle 

 III anterior to and well above spiracle with minute seta, pointed forward and 

 recumbent, above it a black lenticle (these two arising from the two black spots 

 mentioned by Murtfeldt). Spiracle raised, black, forming on prothorax a large 

 conical process, much raised. Lateral tufts as stated. Tubercle IV is a tuft 

 of 4 or S rather short broad setae, situated above and posterior to the lateral tuU 

 which represents V and contains 7-8 very long setae and numerous short ones. 

 Skin, especially near lateral flange, shagreened ; faint traces of yellow dorsal 

 line behind II with V shaped oblique extensions pointing forward. All setae 

 strongly barbed. Thoracic tubercles with two short setae and with the spot 

 above larger than on abdominal segments, oblong (not round) and consisting 

 apparently of fusion of lenticles. 



"Pupa. Wing-sheaths pale green with rows of minute setae and lateral 

 fringe of longer ones. Dorsally whitish-green, thoracic segments with purple- 

 brown markings and geminate fine dorsal line terminating in a large black- 

 brown patch. A faint dark dorsal line on abdominal segments broadening on 

 the 4th to a stripe which is continued to anal segment; traces of oblique lateral 

 lines, reaching to spiracle and most distinct on the two segments posterior to 

 the dark dorsal patch. Spiracles black, the first visible one being raised, conical 

 and arising from a black brown lateral patch. Setae of primary tubercles as in 

 the larvae; dorsal ones however are not single but have clusters of shorter 

 hair around the base." 



