FOREST PROTECTION 39 



REFERENCE LIST 



Compiled by F. D. Couden and C. A. Schenck 

 The following pages will refer the student to publications, most of which 

 should be in the library of the uj>to-date forester, where accounts, more 

 or less complete, of certain species of insects injurious to forest and shade 

 trees may be found. The list is by no means complete, and it is verj^ likely 

 that a few even of the important species have been omitted. The study 

 of Forest Entomology is still ra its infancy; but the literature, while not 

 yet voluminous, is so scattered that it would not be profitable for the pre- 

 sent purpose to go through it with a fine-toothed comb. A great many 

 errors will undoubtedly be noticed by Entomologists, particularly as to 

 synonymy; but it is hoped, nevertheless, that the list will be of some value 

 to the students of Forestry for whom it is designed. 



The arrangement is faulty in that many polyphagous species of insects 

 are not listed imder all of their host trees. Porthetria dispar, for instance, 

 is listed only imder Quercus, whereas the caterpillars of the Gipsy Moth 

 feed indiscriminately on the foilage of almost any tree within their range. 

 The use of the "index," however, will enable the student to find the refer- 

 ences to any insect listed, without regard to the host imder which the re- 

 ference is given. 



Here follow the complete titles of all the publications used in the pre- 

 paration of the list. The abbreviations used in the list proper are printed 

 here in Black-Faced Type, and are followed by the titles, names of authors' 

 and years of publication. 



UNITED STATES PUBLICATIONS 



5th Rept. Ent. Com. U. S. Fifth Report of the United States Entomolog- 

 ical Commission. Insects injurious to forest and shade trees. By 

 A. S. Packard. 1890. 



Ag. Yr. Bk. for 1895 U. S. — Yearbook of the United States Department 

 of Agriculture for 1895. The Shade Tree insect problem in the eastern 

 United States. By L. O. Howard, pp. 361-384. 1896. 



Ag. Yr. Bk. for 1902 U. S. — ^Yearbook of the United States Department 

 of Agriculture for 1902. Some of the principal insect enemies of coni- 

 ferous forests in the United States. By A. D. Hopkins, pp. 265-282. 

 1903. 



Ag. Yr. Bk. for 1903 U. S. — Yearbook of the United States Department 

 of Agriculture for 1903. Insects injurious to hardwood forest trees. 

 By A. D. Hopkins, pp. 313-328. 1904. 



Ag. Yr. Bk. for 1904 U. S. — Yearbook of the United States Department 

 of Agriculture for 1904. Insect injuries to forest products. By A. D. 

 Hopkins, pp. 381-398. The nut weevils. By F. H. Chittenden, 

 pp. 299-310. 1905. 



