INSECTS AFFECTINC PARK AND WdODLAND TRKES 15c: 



These palliative measures are advisable only wiien others can not be carried 

 out, and in order to secure the best result the grubs and pupae should be 

 destroyetl every five tlays so lono;- as the pests are seen in numbers. Hands 

 of tar, sticky fly paper, cotton battinjj;^, etc., while they do no harm, can not 

 be consideretl as of much \'alue in krcping' the elm leaf beetle untler control. 

 The relatix'ely few scrubs caught on a stick)- band are but a drop in the 

 bucket compared with the mass which complete their transformations. It 

 is worse than useless to atti'mpt to control this or any other insect by 

 boring" a hoU' in the trunk of a tree and inserting therein a compound of 

 any nature. The tree is weakened and unless the chemical be powerful 

 enough to kill the tree, the insects are not affected. 



Bibliography 



18S9 Lintner, J. A. Ins. N. Y. 5tli Rcp't, \>. 234-42 



1895 • Ins. X. V. iith Rcp't, p. 1S9-96 



1895 Howard, L. O. U. S. Dep't .Agric. Year Book, p. 363-68 



1S96 Lintner, J. A. Ins. N. Y. 12th Rep't, [). 253-64 



1 898 Felt, E. P. N. Y. State Mus. Bui. 20, p. 1-43 



1899 N. Y. State Agric. Soc. Trans. 59: 279 



1899 Fish. Game and For. Com. 5tli Rep't, p. 354-59 



1902 N. Y. State Mus. Bui. 57, p. 1-43 



Elm saw fly 

 Civibcx aiucricaua Leach 



A cylindric, coiled, yellowish white worm witli a lihick line down the middle of its 

 back, may be met with in midsummer on willows, elms, poplars and other trees. 



This species is a rather common one in New York .State and is usually 

 met with in more or less numbers each year. It occurs with us mostly on 

 the willow and elm and is sometimes present in considerable numbers in 

 limited localities. It is not injurious as a rule in New York State, though 

 it might become so under unusually favorable conditions. 



Early history. This species has been noticed in a more or less frag- 

 mentary way by a number of entomologists. Dr C. Y. Riley in 1885, 

 recorded a peculiar injury by this pest at Washington D. C. Admiral 



