234 LEPIDOPTERA 



moth, and now occurs throughout the eastern part of Mas- 

 sachusetts, New Hampshire, and eastward into New Bruns- 

 wick and Nova Scotia, south and west into Connecticut. 

 It is quite certain to spread by degrees throughout a large 

 part of the entire forested portion of North America. The 

 aduhs are white with the hinder portion of the abdomen 

 brown. The eggs are kiid on trees in small clusters and ha\'e 

 a brown appearance. The larvse hatch in early autumn and 

 the caterpillars become about half-grown before winter and 

 then spinning up in clusters, form a nest of leaves and web 

 in which they secrete themselves for the winter. In spring 

 with the opening of foliage they wander from these nests, 

 attacking the foliage and causing serious injury, completely 

 stripping the trees, so that they may be killed especially if 

 the attack is repeated for two or three seasons. The larvae 

 complete their growth by early summer, pupate, and pro- 

 duce moths in late summer, thus completing the annual cycle. 

 The larvee feed exposed on the foliage and may be killed by the 

 arsenical sprays when occurring on orchard or shade trees, 

 where it is possible to reach them with the spraying machin- 

 ery. An evident means of control is to destroy the over- 

 wintering insects during fall, winter or early spring when 

 they should be conspicuous on leafless trees. They are 

 easily shipped from place to place on twigs or small trees 

 and should be excluded by inspection of shrubs, trees, or 

 cuttings that are imported. 



While not at present established as pests outside of the 

 New England States, these insects deserve to be watched 

 and particular pains taken to prevent their dispersal. Such 

 watchfulness may serve to greatly retard the distribution 

 and postpone the time when they may be destructive in any 

 particular region. 



Web-worm Moths. — The web-worm moths are little, white, 

 with femur of front legs of yellow or orange tint, and the 

 legs and feet with little touches of black. These moths are 

 plentiful during the summer — about the last of June. They 

 deposit eggs in masses on the under surface of the leaf. 

 When the young hatch they usually first attack the leaves 



