46 HAWK-MOTHS. 
three or four oblique black streaks, and a black dot on the 
white stripe. The hind-wing has two whitish, wavy stripes, 
and a fawn-colored one on the outer edge. The head and 
thorax are blackish-brown, with a whitish-fawn color at 
Fig. 49.—Sphinx drupiferarum S. & A.; caterpillar. After Saunders. 
the sides; the eyes are very prominent; the snout-like pro- 
jection in front consists of the two palpi, within which lies 
the tongue, snugly coiled up like the spring of a watch. 
This tongue is as long as the body and is used by the insect 
in extracting nectar {rom flowers. The body is brown, with 
a central line and a band on either side of black, the latter 
containing four or five dingy-white spots. The insect is 
quite common in Minnesota, as indicated by the large num- 
ber of moths attracted to the electric light. Even as far 
north as Duluth the insects occur in fairly large numbers. 
The egys are laid singly on the leaves of the plum. They 
are of a pale yellowish-green color, smooth, slightly oval, 
and about one-fifteenth of an inch long. In about eight days 
the young caterpillar eats its way out through the side of 
the egg; the shell itself is usually eaten in part or entire. 
The young larva is of a pale yellowish-green color, with a 
few slightly elevated whitish tubercles on every segment, 
{from each of which arises a single short hair; the caudal 
horn is dark. When full grown the caterpillar (Fig. 49) is 
