26 MISC. PUBLICATION 318, U. S. DEPT. OF AGRICULTURE 
flowers. The adults of this group of Lepidoptera are called hawk 
moths. These insects have rather heavy bodies and four wings, the 
hind pair beg much shorter than the fore pair. The larvae of 
this group of moths are rather large 
and have a taillike horn at the end 
of the body. When disturbed these 
larvae throw their heads back almost 
at a right angle and remain in that 
position. Both the adult and larva 
of the different species of hawk moths 
vary considerably. The species shown 
FIGURE 62.—Hawk moth. here is Protoparce quinquemaculata, 
and is the parent of one of the large, 
green hornworms that feed on the foliage of tobacco, tomato, and cer- 
tain other plants. It is possibly the most common and most destruc- 
tive form. This moth is ash gray in color with darker markings, and 
its wing expanse is from 4 to 5 inches. This species overwinters in the 
earth in the pupal stage. The worms can be hand-picked and killed, 
or killed by applying a poison dust or spray to the food plant. Toma- 
toes in fruit should not be sprayed with poisons. This species feeds 
on tobacco, tomatoes, or potatoes. 
Carpenter worm.—Orchardists often find rather large holes in 
the branches or trunks of their trees, and when the holes are opened 
the larvae, or young, of the carpenter 
moth are found. This moth has a wing 
expanse of from 2 to 31% inches; the wings 
are mottled gray, the hind wings of the 
male being yellow to orange lined with 
black. The mouth parts are absent or 
vestigial. The life changes are complete. 
In many sections this Insect is a pest. 
Suggestions for control are to cage the 
tree trunks to prevent infestation, and the injection of carbon di- 
sulphide into the occupied burrows. The scientific name of the 
carpenter worm is Prionowystus robiniae. This insect belongs to the 
order Lepidoptera: 
Banded woolly bear.—In the fall and early spring there is a black 
and brown banded woolly bear caterpillar that appears to be wander- 
ing around aimlessly. Quite often it is 
noticed crossing highways or sidewalks. 
In the fall it attempts to find protected 
places where it can spend the winter. This 
caterpillar is the larva of the Isabella 
tiger moth. The moth, or adult insect, has 
a wing expanse of from 2 to 21% inches. 
It is dull orange yellow with dusky spots. 
The adult has sucking mouth parts; the 
larva has chewing mouth parts and feeds 
on grass and leaves of various low-growing plants. Although it is 
of questionable importance, this insect can be controlled with stomach 
poisons. It belongs to the order Lepidoptera; the scientific name of 
the species shown here is /sta isabella. 
Bollworm or corn earworm.—Some insects have several common 
names, depending on the food plant on which they feed. ‘This is one 
FIGURE 63.—Carpenter worm. 
FIGURE 64.— Banded woolly bear. 
