856 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION 



1 fouud only one tree next to the house thus affected by this worm. 

 It is probable that in a dense spruce growth the trees would be less 



exposed to the attacks of what may prove a 

 serious enemy of shade spruces. The obvious 

 remedy is, to burn the affected cones and mass 

 of castings late in summer. 



Fig. 289.— Spruce 

 Cone-worm (en- 

 larged, original). 



Fig. 290.— Moth of Spruce Cone-worm 

 (enlarged, original). 



Larva. — Of the usual Phycid form; the head aud prothoracic shield deep amber 

 brown; the body reddish carneous or amber-brown, with a livid hue; a faint, dark, 

 dorsal, and a broader, subdorsal line ; piliferous warts distinct ; each segment divided 

 into a longer anterior and shorter, narrower, posterior section, bearing two dorsal 

 piliferous warts, besides a lateral one. Length 16"™. 



Pupa. — Of the usual Phycid appearance ; rather slender, the abdominal tip blunt, 

 with six long slender up-curved bristles. Length 9™™. 



Moth. — 1 male. Forewings long and narrow, stone-gray, with no reddish or brown- 

 ish tints. Head, palpi, and body dark gray with white scales intermixed. Fore- 

 wings dark and light gray; a broad basal light pitch; before the middle of the 

 wing a white zigzag line composed of a costal and median scallop. A square whitish 

 distal patch, and half way between it and the outer margin is a narrow white zigzag 

 line inclosed on each side by a dark border, the line being deeply angulated three 

 times. Edge of the wing next to the base of the fringe deep black, interrupted by 

 narrow pale gray spots. Fringe dusky, with fine white scales. Legs banded with 

 black and gray. Hind wings pale gray. Expanse of wings 22™™; length of body 

 10mm, (Identified by Prof. C. H. Fernald.) 



In "A note on Dioryctria decuriella and its allies," in the Entomol- 

 ogists' Monthly Magazine for March, 1888, E. L. Eagonot remarks : 

 " The North American Pinipestis reniculella Grote and P. ahietivorella 

 Grote I consider only dark forms of decuriella Hb., and, of course, the 

 generic name of Pinipestis Grote is simply synonymous with Dioryctria 

 Z." He states that J), decuriella Hiibn. {abietella S. V.), feeds both on 

 firs and pines, and that the larva "lives in the cones, young shoots, 

 and decayed wood of the coniferse." 



42. The pine nephopteryx. 

 Pinipestis Zimmermanni Grote. 



This is said by Mr. Zimmermann to be destructive to young spruces 

 in New York. (Can. Ent., xii, p. 59.) 



