INSECTS AFFECTING FAKK AND WOODLAND TREES 



407 



lampus, both of which he states to be undescribed. He adtls that the hitter 



is far more important. 



Remedial measures. The onl)- method of reHevinj;- tlie troubk;, so far 



as Professor Comstock coukl suggest, was picking the infested tii)s in early 



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



valued trees. 



Bibliography 



1S80 Comstock, J. H. V. S. Dep't Agric. Rep't 1879, p. 236-37 



1S83 Scudder, S. H. Mass. Soc. Promotion Agric. Pub., p. 1-20 



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



1891 Treat, Mary. Garden and Forest. 4: 14 



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



Pitch pine retinia 



Evctria riqidana Fern. 



Inhabiting terminal shoots of Pinus rigid a, and of simihir habits to the Nan- 

 tucket pine moth, E v e t r i a f r u s t r a n a S udd., a gray, brown, or blackish larva ] 3 inch 

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



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



1-879, from Prof. S. H. Gage of Ithaca. The work of this species is stated 



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



described as differing in coloration, and being slightly larger. The i^'oth 



possesses characters intermediate between E. frustrana Scudd. and 



E. comstockiania Fern. 



Bibliography 



18S0 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 



Evctria coiustockiana 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 ^2 

 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 



