368 LEPIDOPTERA. 



Fig. 4, male), the white-marked Orgyia or tussock-moth. 

 It is to the eggs of this insect that the late Mr. B. H. Ives, 

 of Salem, alludes, in an article on "insects which infest 

 trees and plants," published in Hovey's " Gardener's Maga- 

 zine." * Mr. Ives states, that, on passing through an apple 

 orchard in February, he "perceived nearly all the trees 

 speckled with occasional dead leaves, adhering so firmly to 

 the branches as to require considerable force to dislodge 

 them. Each leaf covered a small patch of from one to two 

 hundred eggs, united together, as well as to the leaf, by a 

 gummy and silken fibre, peculiar to the moth." In March, 

 he " visited the same orchard, and, as an experiment, cleared 

 three trees, from which he took twenty-one bunches of eggs. 

 The remainder of the trees he left untouched until the 10th 

 of May, when he found the caterpillars were hatched from 

 the egg, and had commenced their slow but sure ravages. 

 He watched them from time to time, until many branches 

 had been spoiled of their leaves, and in the autumn were 

 entirely destitute of fruit, while the three trees which had 

 been stripped of the eggs were flush with foliage, each limb, 

 without exception, ripening its fruit." These pertinent re- 

 marks point out the nature and extent of the evil, and sug- 

 gest the proper remedy to be used against the ravages of 

 these insects. 



In the New England States there is found a tussock or 

 vaporer moth, seemingly the same as the Orgyia antiqua, the 

 antique or rusty vaporer-moth of Europe, from whence possi- 

 bly its eggs may have been brought with imported fruit-trees. 

 The male moth is of a rust-brown color, the fore wings are 

 crossed by two deeper brown wavy streaks, and have a white 

 crescent near the hind angle. They expand about one inch 

 and one eighth. The female is gray, and wingless, or with 

 only two minute scales on each side in the place of wings, 

 and exactly resembles in shape the female of the foregoing 

 species. The caterpillar is yellow on the back, on which 



* Vol. I. p. 52. 



