; F-519522 
FIGURE 125.—The brown-tail moth, Nygmia phaeorrhoea: A, 2 winter nest; 
B, cocoon in leaves; C, mature larva; D, female depositing egg mass; E, 
egg mass on leaf; F, male adult; G, female adult. 
then, the area and intensity of infestations have declined greatly. 
Since the late fifties, infestations have been recorded from only a 
few coastal counties in Maine and New Hampshire and from 
Cape Cod. During the first several years following its introduc- 
tion, its hosts were recorded as several species of deciduous trees, 
principally apple, pear, plum, oak, willow, elm, and maple. At 
present, infestations occur almost entirely in old, abandoned 
apple orchards and on beach plum. 
Brown-tail moth adults are pure white, except for the tip of 
the abdomen, which is covered with brown hairs. The female is 
rather heavy-bodied and has a wingspread of about 37 mm. Males 
are more slender and somewhat smaller. Full-grown larvae are 
326 
