V 



INSECTS AFFECTING PARK AND WOODLAND TREES 407 



lampus, both of which he states to be undescribed. He adds that the latter 

 is far more important". 



Remedial measures. The only method of relieving the trouble, so far 

 as Professor Comstock could suggest, was picking the infested tips in early 

 winter and burning them, a measure practical only in the case of highly 

 valued trees. 



Bibliography 



1880 Comstock, J. H. U. S. Dep't Agric. Rep't i87y, p. 236-37 

 1883 Scudder, S. H. Mass. Soc. Promotion Agric. Pub., p. 1-20 



1890 Packard, A. S. US Ent. Com. 5:745-54 



1 891 Treat, Mary. Garden and Forest. 4: 14 



1903 Felt, E. P For. Fish & Game Com. 7th Rep't, p. 501-3 



Pitch pine retinia 



Evetria rigidana Fern. 

 Inhabiting terminal shoots of Pin us rigida, and of similar habits to the Nan- 

 tucket pine moth, E v e t r i a f r u s t rana S uid 1, a gray, brown, or blackish larva inch 

 long, becomes a small moth with dingy white wings, marked with dark red and silvery gray. 



. This species was received in the larval stage by Professor Comstock in 

 1879, irom Prof. S. H. Gage of Ithaca. The work of this species is stated 

 to resemble that of Evetria f rustrana Scudd., and the larva is 

 described as differing in coloration, and being slightly larger. The moth 

 possesses characters intermediate between E. f rustrana Scudd. and 

 E. comstockiania Fern. 



Bibliography 



1880 Comstock, J. H. U. S. Dep't Agric. Rep't 1879 p. 237 

 1890 Packard, A. S. U. S. Ent. Com. 5:754-55 



Pitch twig moth 



Evetria comstockiaria Fern. 

 Masses of pitch,' usually on the upper side of the smaller limbs and twigs of hard 

 pine, cover the entrance of a burrow made by a small yellowish white caterpillar about ^ 

 inch in length. 



The work of this insect was quite abundant on hard pine at Karner in 

 1901, and its operations have also been observed on many hard pines in the 



