INSECTS AFFECTING PARK AND WOODLAND TREES 507 



A yellow-headed, light yellowish, tufted caterpillar closely resembling that of the white 

 marked tussock moth, feeds on oak and a number of other trees 



Definue'-marked tussock moth, Hemerocampa definita, p. 522 

 A black-headed caterpillar about 1%. inches long, thickly clothed with yellowish hairs and 

 black tufts of the same, feeds in September on a variety of trees 



Oak tussock caterpillar, Halisidota m a c u 1 a t a, p. 523 

 A yellowish, brown-headed caterpillar about i}{ inches long, clothed with delicate buff 

 yellow hairs and with four light brown dorsal pencils of the same, feeds in the fall on a 

 large variety of trees. . . Pale tussock caterpillar, Halisidota tessellaris, p. 523 

 A black-headed, yellow or white-tufted caterpillar with a black hair pencil on each side, 

 feeds on most deciduous forest trees 



Rusty tussock moth, Notolophus antiqua, p. 524 

 A black-headed caterpillar clothed with grayish hairs and with two black hair pencils on 

 the second segment, and square tufts on segments 5 to 12, feeds on various 



deciduous forest trees Dark tussock moth, Olene a c h a t i n a, p. 524 



Large caterpillars thickly covered with greenish yellow and bearing a pair of long, black 

 hair pencils on the first and third abdominal segments and a single one on the eighth, 

 occurs in September on a variety of trees 



American dagger moth, Apatela am eric an a, p. 525 

 A grayish, scarlet-marked caterpillar about 2)2 inches long, remarkable because of the 

 large bordering fringes on each side, occurs in September on oak, ash and apple 



American lappet moth, Epicnaptera americana, p. 525 

 A very large, pea-green, brown-headed, fleshy caterpillar with small reddish brown tuber- 

 cles with silvered bases, occurs in midsummer on the foliage of a great variety of 



plants American silk worm, Telea polyphemus, p. 526 



A stout, apple-green caterpillar about 3 inches long and with six rows of small, pink, hair- 

 bearing tubercles, occurs in midsummer on a variety of trees 



Luna moth, Tropaea 1 11 n a , p. 526 

 A bright, tawny or orange-colored caterpillar with a dusky stripe along its back and 

 prominent spines on its thoracic segments, feeds on oak in September 



Spiny oak worm, A n i s o t a stigma, p. 527 

 Peculiar, brightly colored, variously shaped and usually motionless, sluglike caterpillars 

 occur in midsummer on the foliage of various deciduous trees 



Slug caterpillars, p. 527 



A peculiar larva about 1 inch long, thickly covered with long, mouse gray and fawn-colored 

 hairs, occurs on the foliage of various trees in September and October 



Crinkled flannel moth, Lagoa crispata, p. 529 



