4l6 NEW YORK STATE MUSEUM 



or abdominal legs pale yellowish with dark green bases [pi. 20, fig. 6]. 



The cocoon is cylindric, ovoid, silver)' white and about 5 jg inch long. The 



adult has been characterized by Dr Harris substantiall)' as follows : 



The male is y^ inch long with awing spread of about -,5 inch. The 

 body is black above, brown beneath and the wings are transparent with 

 changeable tints of rose-red, green and yellow. The legs are a dirty leather 

 yellow color. The antennae resemble short black feathers, wide at the end, 

 narrowed to a point and are curled inward on each edge so as to appear 

 hollow. The female is about s^'jo inch long and with a wing spread of j4 

 inch or more. She is yellowish brown above, with a short blackish stripe 

 on each side of the middle of the thorax. The body beneath and her legs 

 are paler, of a dirty yellow color, and her wings resemble those of the male. 

 The antenna.e are short, taper to a point, consist of 19 segments and are 

 serrate on one side. 



Spruce bud worm 



Tortrix Jitiiiijfraiia Clem. 



Trees dying in masses or clumps of greater or less extent are verj- likely affected by 

 this species. 



The spruce bud worm has been characterized by Dr Packard as the 

 most destructive enem)' of spruce in certain portions of Maine. He and 

 others ha\e placed on record a number of instances of severe injury 

 resulting from this insect's work. This is due, as observed by Mr Kellogg, 

 to the fact that there are in the spruce but a few buds, usually two or three 

 at the end of a twig, and if they are destroyed the tree does not reproduce 

 them till the following year. This makes it very easy for an insect feeding 

 on these portions to inflict very serious damage. 



Description. Young larvae have been described by Dr Packard as 

 uniformly pale green with a yellowish tint. The head is dark brown, the 

 thoracic shield amber, with two dots on the posterior margin ; hairs about 

 half the length of the body thickness. Length about 3/32 inch. Just 

 before the last molt they are uniformly rust-red brown with the tubercles 

 duller, the head and thoracic shield black. The full grown larva has an 

 unusually thick, stout body tapering gradually from the middle to the end 

 and slightly, flattened from above. The head is not quite so wide as the 

 body, a very dark brown, though lighter than before the last molt. 



