INSKCTS AFFECTING I'AKK AND WOODLAND TREES 407 



lampus, both of whicli he states to l)e uiKlescrihed. He adds tliat the hutt:r 



is far more ini|)ortant. 



Remedial measures. The only method of reliexiiii;- tlie trouble, so far 



as Professor Comstock could suo^est, was picking" the infested tips in early 



winter and burning them, a measure practical onl\- in the case of highly 



valued trees. 



Bibliography 



18S0 Comstock, J. H. f. S. Dei)'t Agric. Kept i.S;^, |i. 2,56-37 



18.S5 Scudder, S. H. Mass. Soc. Promotion Agric . I'lih., |). 1-20 



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



1891 Treat, Mary. Crardun and Forest. 4: r4 



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



Pitch pine retinia 



Jivctria rii^idaiia hern. 



Inhabiting terminal shoots of 1* i n u s r i g i d a, and of similar habits to the N'an- 



tucket pine moth, E v e t r i a f r u s t r a n a S iid 1., a gray, brown, or blackish larva ' .; inch 



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



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



1879, from Prof. .S. 11. (iage of Ithaca. The work of this species is stated 



to resemlile that of I'^velria f rust ran a .Scudd., and the lar\a is 



described as differing in coloration, and l)eing slightl)' larger. The p-'oth 



possesses characters intermeiliate between I'^. f rust ran a -Scudd. and 



E. c o m s t o c k i a n i a I'\rn. 



Bibliography 



1880 Comstock, J. H. U. S. l)ei)'t .\gric. Rei>'t 1879 p. 237 

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



Pitch twig moth 

 Evctria conistockiana l'"ern. 

 Masses of pitch, usually on the r.jjper 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 Karncr in 

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



