Chapter XX. 



INSECTS INJURIOUS TO THE CEDAR, CYPRESS, ETC. 

 INSECTS INJURIOUS TO THE CEDAR. 



Thuja occidentalis. 



1. The cedar tineid. 



Bncculatrix thuieUa Packard. 



Order Lepidoptera ; family TiNEiDiE. 



Feeding on the leaves and spinning slender, small, conspicuous white cocoons at- 

 tached to the leaves, and transforming to a narrow-winged beautiful pearly-white 

 moth, dotted and marked with brown. 



The following account is taken from my first report to the Massachu- 

 setts Board of Agriculture : 



This is a little moth, of which the caterpillar is unknown, though I found the 

 moths and cocoons in abundance on a cedar tree in Brunswick. Me., July 10. It is 

 undoubtedly similar in its Ifabits to a little moth which 

 lives not uncommonly on the apple tree, and h:is been 

 described by Dr. Clemens under the name oi Bucculatrix 

 pomifolielJa. Its long, slender, white cocoons may be 

 found, at any time after the leaves have fallen, on the 

 branches of apple trees. 



Dr. Clemens sajsthat "the larva feeds externally on 

 the leaf of the apple, at least at the time it was taken, in 

 the latter part of September. It is cylindrical and sub- 

 moniliform ; tapers anteriorly and posteriorly ; with 

 punctiform points and isolated hairs ; first segment with 

 rather abundant dorsal hairs; three pairs of thoracic 

 feet and five abdominal pairs. Head small, ellipsoidal, 

 brown ; body dark yellowish green, tinged with red- 

 dish anteriorly ; hairs blackish and short. Early in 

 October the larva enters the pupa state, wearing an 

 elongated, dirty white, ribbed cocoon, and appears as 

 an imago during the latter part of the following April, 



or early in May." The present species seems to be undescribed, and may be called 

 Bncculatrix thuiella. It belongs to the extensive Tineid family, and its general appear- 

 ance is sufficiently indicated by the drawing. 



Moth. — The body and wings are pearly white, and the antenuie are white, with 

 brown wings, while there is a low broad tuft of white scales between the antennse, 

 the crest being much flatter than in the species living on the apple. The forewings 

 are white, and crossed in the middle by a broad brown band, and beyond this band 

 by alternating white and brown stripes, crossing from the front edge (costa) of the 

 wing. On the end of the wing, and in the middle of the outer edge, is a conspicuous 



917 



Fig. 304.— The cedar tineid en- 

 larged ; a, cocoon, nat. size. — 

 From Packard. 



