extended up the Atlantic coast as far as New Jersey. It is likely 
to appear suddenly in large numbers upon single trees, stripping 
them completely. 
The full-grown caterpillar (Fig. i, e, f, h) is rather strongly 
marked, with a broad velvety black stripe on the back and sulphur- 
yellow sides spotted with black, while the under side of the body is 
pale green. It is unusually variable in color, however, there being 
both light and dark forms. It is from two and a fourth to three 
inches long, and has a hornlike appendage projecting from the 
hinder end of the back. The young caterpillars (Fig. i, c) are 
pale yellow and spotted with black. There are probably but two 
generations in Illinois. The caterpillars leave the trees and go 
into the ground to pupate (Fig. 2). 
Fig. 2. Catalpa Sphinx, Ceratomia 
catalpce, papa in cell in earth. 
The parent insect is a large heavy-bodied moth (Fig. i, ^) with 
strong, narrow, brownish-gray wings, with obscure lines and spots 
of black. The eggs (Fig. i, a) are laid in masses on the leaves, 
sometimes as many as a thousand in a bunch, and the young, on 
hatching, feed at first in companies — a fact w-hich makes it easy to 
destroy them if their presence is detected early, by picking off or 
spraying the infested leaves. A general spraying of a tree with 
arsenate of lead or Paris green will destroy the caterpillars at any 
time. Professor H. Garman, of Kentucky, says that the nearly 
grown worms can be shaken or jarred down from most catalpa 
trees and readily destroyed by hand. 
