THE CATALPA SPHINX. 3 
The parent of the caterpillar is a large grayish-brown hawk moth, 
marked as shown in figure 1,/. It has a large, heavy body and pow- 
erful wings which measure 3 inches from tip to tip when spread. It 
lays its eggs In masses, in which respect it differs from other hawk 
moths. An egg mass is shown in the illustration at @ and an indi- 
vidual egg at 7. The young caterpillars are lighter colored than the 
mature ones, being pale yellow. Two striking variations of the larva 
Fic. 2.—Catalpa trees showing excessive defoliation by the catalpa sphinx. (Original.) 
in the later stages are shown at f and e, while h represents the com- 
monest dark form of caterpillar. The larve have a stout black horn 
near the hind end of the body. 
ORIGINAL HOME AND PRESENT DISTRIBUTION. 
The known distribution of the catalpa sphinx at the present time 
(1915) is shown in figure 3. This insect is strictly a North American 
