590 State Board of Aguiculture, &c. 



brush of hairs at each end, occasionally does much dam- 

 age to apple trees, sometimes wholly preventing them from 

 fruiting. This moth, Orgyia leucostig^na, Smith, has 

 wingless females ; the males are of ash gray color, with 

 wavy bands of a darker shade on the upper wings, which 

 have a small black spot near the tip and a white crescent 

 near the outer angle. The wings expand a little less than 

 one and one-half inches. The female is lighter in color 

 than the male. The eggs are laid on top of or near the 

 cocoon and covered with a white substance which becomes brit- 

 tle as it dries. This has-more than once done some damage to 

 apple trees in Massachusetts by eating tlie leaves, but it 

 does not usually occur in sufficient numbers to do much 

 harm. Picking off the eggs would be the remedy. 



A great pest to our apple trees is the well known canker 

 worm, Anisopteryx vernata, Peck. 



Fig. 9. 



CANKER WORM— ANISOPTERYX VERNATA, Peck. 



a, male moth ; b. female moth; c, joints of female antODna ; d, joints 



of female abdomen ; e, ovipositor ; a, and b, natural size ; c, d, 



and e, enlarged. 



The males of this moth (lig. 9, a,) are very prettily 



and delicately formed. The wings are large, soft and 



silky, and quite thin. The front pair are d^rk gray, or ash 



colored, bearing a white spot on the anterior edge near 



the tip, and hav^e two whitish bands, on the outside of 



which are black dots. The hind wings are of lighter 



