THE CRANBERRY WORM. 241 



In the pupa the segments of the abdomen are divided by- 

 deep sutures, the edge being angulated, and with two dorsal 

 rows of unusually small spines. The tip is prolonged into a 

 long point, nearly twice as long as wide, and giving rise to three 

 pairs of curved minute filaments. Length .34 of an inch. 



The yellow Cranberry worm.. — August 4th I received from 

 New Jersey, through Mr. S. H. Scudder, specimens of this in- 

 sect in all its stages, under the name of the " Cranberry worm." 

 It seems to be a common insect in the cranberry fields of New 

 Jersey, but has not yet been found in the New England States. 

 It is new to science and may be called the Tortrix vaccinii- 

 vorana. 



The larva draws the leaves together with silken threads, 

 transforming into a pupa within the mass. A single larva seems 

 to select one twig, or branch, and eats the parenchyma from the 

 upper surface of the leaves, until every leaf or twig is injured, 

 and the plant nearly as much destroyed as if the leaves were 

 eaten up entirely. In this way each larva seems to eat the best 

 part of about twelve leaves, which usually remain on the stalk 

 affording a shelter to the pupa, which is naked, partly sticking 

 out of the leaves. 



The larva is pale honey yellow, with a slight greenish tinge. 

 The head and prothoracic shield is pale honey yellow, and the 

 head is nearly as wide as the pro thorax. The body tapers grad- 

 ually to the tail, and is furnished with fine sparse pale hairs 

 arising from prominent tubercles, the hairs being one-half as 

 long as the body is wide ; the four dorsal tubercles are arranged 

 in a trapezoid, with a deep crease between the anterior and 

 posterior pair. The thoracic feet are tipped with black. On 

 each side of the base of the head is a lateral S-shaped blackish 

 brown linear band, the upper part of the S terminating on the 

 top of the occiput, the line being most distinct on the side of the 

 head. The ocelli are black. It is .27 of an inch in length. 



The pupa is brown, rather slenderer than usual, with the ver- 

 tex of the head prolonged into a large tubercle, surmounted by 

 a round knob whicli is rough, while the tubercle below is 

 smooth ; there is an angular projection on eacli side of the base 

 of the tubercle, forming a shoulder to it. The wing-covers 

 reach to the end of the third abdominal ring, while the antennae 

 reach to the end of the second pair of feet, which are parallel to 



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