346 Report OF THE ENTOMOLOGISTS OF THE 
INTRODUCTION. 
In some sections of the State the raspberry saw-fly is at times one 
of the most troublesome insects with which the grower of rasp- 
berries and blackberries has to deal. ew if any of the numerous 
species of insects known to this State which attack these import- 
ant crops are capable of doing more serious injury in a single 
season. J ortunately it is not a difficult insect to control and 
hence it is chiefly important that the farmers should learn the ~ 
nature of the insect, how the presence of a brood can be detected 
while yet in the egg stage and the measures necessary to take in 
destroying the larve. 
The investigations and experiments herein recorded were > 
largely made on the farm of Mr. J. F. Mikelson of Oaks Corners, 
N. Y., to whom the writer is indebted for many courtesies shown. 
{ 
GENERAL NOTES UPON THE INSECT. 
CLASSIFICATION AND NAME. 
As indicated by its name this insect belongs to the group of 
hymenopterous insects popularly known as the saw-flies, which 
in number of species and economic importance form the princi- 
pal members of the group T'enthredimdae. The raspberry saw- 
fly was first described by Harris in 1850, who gave it the scien- 
tific name of Selandria rubt. It has recently been included by 
Ashmead in his new genus, Monophadnoides.* 
The insects of this group are most destructive to garden nie 
field crops of any of the Hymenoptera. They are, therefore, of 
much importance to the agriculturist, and hence it may not be 
out of place to review briefly the principal characteristics by 
means of which the more common saw-flies can be recognized in 
their various stages of development. 
The egg-— The eggs should be looked for on the aviiitey surface 
of the leaf, usually near the midrib and larger veins. Sometimes 

1 Canadian Entomologist, 30:253. 
