REPORT OF THE STATE ENTOMOLOGIST 1901 829 



members were brought together in one collection, that the com- 

 parative differences between them might be more easily seen. 

 The 39 species represented include, among others, the two very 

 common and injurious forms known as the appletree bark louse 

 and the scurfy bark louse. The notorious San tlose scale insect 

 is well represented, and its close allies, the English fruit tree 

 scale insect, the cherry scale insect and Putnam's scale insect, 

 also find a place in the collection. These more important 

 enemies of fruit trees have been treated of in considerable 

 detail and admirably illustrated in colors in bulletin 46 of the 

 New York state museum. Another very important scale insect 

 included here is the elm bark louse, a species which is noticed 

 in some detail and illustrated in colors in the 5th report of the 

 fisheries, game and forest commissioners of New York. 



Forest insects (nos. 203-51). This very important group is 

 represented in the collection by 49 species, the result mostly of 

 recent collections made in the state. Dr A. D. Hopkins, who is 

 a recognized authority on this subject, estimates the total 

 annual loss caused by insects in this country in forest and forest 

 products at the enormous sum of |25,000,000. This is a group 

 to which comparatively little attention had been paid in New 

 York till the state entomologist took up the study of it several 

 jears ago. Among the more important forms represented in 

 this collection may be mentioned the pine " sawyer," a large 

 grub which frequently causes much injury to logs allowed to lie 

 for some time in mill yards. A number of species of bark- 

 Jborers are represented. They are of special interest, because 

 several of them are quite injurious to soft woods in the Adiron- 

 dacks, while other species are killing pine in the Hudson river 

 valley and on Long Island. The forest tent-caterpillar, the 

 pest which has been ravaging our hard maples in recent 

 years, is well represented in the collection, along with some of 

 its natural enemies. A summary account of this insect, illus- 

 trated by colored figures, has been given by the state ento- 

 mologist in the 4th report of the fisheries, game and forest com- 

 missioners of New York. 



