Sphingidae 



"telescoping" into one another, and the anterior portion of the 

 body being often raised, as illustrated in Plate I, Figure i. It is 

 alleged that the habit of assuming this posture, suggesting a 

 resemblance to the Egyptian Sphinx, prompted the application 

 of the name to these creatures. The larvae are not gregarious, 

 but feed solitarily upon their appropriate food-plants. 



Some forms pupate in a cell deep under the soil, others spin 

 a loose cocoon among damp fallen leaves and pupate at the sur- 

 face. The pupae are as remarkable as the larvae. A few genera 

 have the proboscis enclosed in a sheath which is separate along 

 the greater portion of its course from the adjacent wall of the 

 body. This is illustrated in Figure 22. 



Fig. 22. Pupa of Protoparce quinquemaculatus. (After Riley.) 



The Hawkmoths of the United States and Canada fall into 

 five subfamilies, the Acherontiince, the Ambulicince , the Sesiince, 

 the Philampelince, and the Cheer ocampince. 



SUBFAMILY ACHERONTIIN/E 



Genus HERSE Oken 



(1) Herse cingulata Fabricius, Plate VI, Fig. 3, $ , (The 

 Pinkspotted Hawkmoth.) 



Syn. convolvuli, var. Merian; afjinis Goeze; drurazi Donovan; pungens 

 Eschsholtz; decolor a Henry Edwards. 



This large and elegant hawkmoth, the larva of which feeds 



upon sweet-potato vines and various other Convolvulacece, has 



been confounded by writers with H. convolvuli Linnaeus, which 



it resembles, but from which it is abundantly distinct. The 



latter species is confined to the old world. H. cingulata, the 



only species of the genus occurring in the western hemisphere, 



ranges from Canada to northern Patagonia, and is also found in 



the Galapagos and Sandwich Islands. I have a specimen taken 



at sea in the Atlantic, five hundred miles from the nearest land. 



43 



