362 
THE STUDY OF INSECTS. 
afternoon, or on a cold day, when the larvae are not scat¬ 
tered over the tree feeding. 
The other Eastern species of this genus is the Tent-cater¬ 
pillar of the Forest, Clisiocampa disstria (C. dis'stri-a). This 
species resembles the preceding in habits. It is more apt, 
however, to feed upon forest-trees. The moth differs from 
C. americana in having the oblique lines on the wings dark 
instead of light; the larva differs in having a row of spots 
along the back instead of a continuous narrow line; and 
the egg-masses differ in ending squarely instead of being 
rounded at each end. 
The more common species of the Pacific coast are Clisio¬ 
campa californica , whose nests may be found on oaks in 
March and April, and Clisiocampa constricta , which infests 
fruit-trees later in the season. The caterpillars of the last- 
named species do not make a tent, although they live in 
colonies. 
The larvae of Tolype and Phyllodesnta are remarkable for 
having on each side of each segment a little lappet or flat 
lobe; from these many long hairs are given out, forming a 
fringe to the body. When at rest the body of the larva is 
flattened, and the fringes on the sides are closely applied to 
the surface of the limb on which the insect is. Thus all ap¬ 
pearance of an abrupt elevation is obliterated ; the colors 
of these larvae are also protective, resembling those of the 
bark. 
The genus Tolype includes only two common North 
American species; both of these 
occur in the East. The more com¬ 
mon of the two is the Velleda 
Lappet, Tolype velleda (Tol'y-pe 
vel'le-da). The body of the moth 
is milk-white, with a large black¬ 
ish spot on the middle of its back 
(Fig. 443). That part of this spot 
which is on the thorax is composed of erect scales; the cau- 
Fig. 443.— Tolype velleda. 
