Sphingidae 



The insect feeds in the larval stage upon various species of 

 Gaura, and ranges from Georgia to Texas and as far north as 

 southern Kansas. 



(2) Pogocolon juanita Strecker, Plate II, Fig. 12, $ . 

 (Strecker's Day-sphinx.) 



The moth in the general style of its maculation is very much 

 like the preceding species, but is considerably larger, and the 

 colors are decidedly brighter. The caterpillar is quite different 

 in its markings from the larva of L. gaurce. 



The habitat of this species is Texas, so far as is now known. 



One other species of Pogocolon, P. vega Dyar, occurs in our 

 region. It is much darker in color than the two former species, 

 which it otherwise somewhat closely resembles. 



Genus PROSERPINUS Hubner 



Head small ; proboscis moderate or long ; antennae clavate ; 

 body stout ; abdomen with or without lateral tufts, but always 

 with a more or less well developed anal tuft. Anterior tibiae 

 stout, armed with spines outwardly and at tip. Fore wings 

 elongate, generally somewhat curved outwardly about the 

 middle, and with the inner angle more or less distinctly 

 produced ; more or less densely clothed with scales over their 

 entire surface. The moths are diurnal in their habits, and mimic 

 bumblebees in their appearance. 



(1) Proserpinus flavofasciata Walker, Plate II, Fig. 8, ? . 

 (The Yellow-banded Day-sphinx.) 



The head and thorax are pale yellow, the latter obscured with 

 brownish hairs about the middle. The abdomen is black with 

 the basal segment about the middle and the preterminal segment 

 on either side pale yellow. The fore wings on the upper side 

 are blackish, crossed by an oblique whitish band. The hind wings 

 are deep black, crossed by a broad orange-yellow band. The fore 

 wings on the under side are bright orange-yellow at the base. 



This is always a rare insect in collections. It ranges, so far 

 as is known, through British America, and southward and east- 

 ward to Maine and Massachusetts. It is found in very early 

 summer hovering over flowers. 



(2) Proserpinus clarkiae Boisduval, Plate II, Fig. 10, ? . 

 (Clark's Day-sphinx.) 



13 



