126 MOTHS AND BUTTERFLIES. 
yellow and seem to be thinly covered with scales, rendering them 
semi-transparent. Several rows of whitish, silvery spots cross the 
fore wings and between them is a fine stipple of brown dots. We 
Halisidota tessellata. 
have other species of tussock moths which closely resemble the fore- 
going, both in the larval and perfect state. 
Orgyia leucostigma is interesting from the fact that the female is a 
wingless, grub-like creature, looking little like her mate which, 
although plain grayish-brown in color, has broad wines and can fly. 
Larva of Orgyia leucostigma. 
The caterpillar is one of our handsomest, being striped with yellow, 
brown, green and lilac, sparsely clothed with white hairs on the 
sides with two long plumes of brown hairs next the head, a similar 
plume on the posterior end of the body and four short, thick, white 
putts on the back. Its head is red, and there are two red warts near 
the tail. The insect feeds on apple, sometimes doing a good deal of 
damage, spins a thin cocoon frequently on the tree trunk, and upon 
emerging, the female lays her eggs on the top of the cocoon, cover- 
