EBEHHAHT8 OUTLINES OF 



CHAPTEE II. 



Injurious Hymenoptera. 



The name Hymenoptera is derived from the Greek words, 

 hymen, membrane; and pteron, wing, (plural, ptera). It 

 includes bees, wasps, saw-flies, ants, etc. 



They are possessed of greater intelligence, and their 

 transformations are more complete than those of any other 

 order. The larvae are footless grubs, except in the case of 

 saw-flies, whose young have abdominal legs. The reason- 

 ing powers of Hymenoptera have been so highly eulogized 

 as to be said to diffpr from those of man only in degree. 



THE PEAR-TREE SLUG. 



(Selandria cerati. Peck. > 



The Pear-Slug hibernates as a pupa, the imagos or per- 

 fect insects emerging in May and June. The adult is a 

 bright black fly. If the tree is shaken, the insects usually 



Fig. 1. Pear-tree Sing. 



fall to the ground and feign death. The saw-flies (to which 

 family the Pear- Slug belongs), are thus named because of 

 the saw-like appendage at the end of the abdomen in most 

 females. With this the leaves of trees are slit, and in these 

 crevices the eggs deposited. Says Saunders: " The female 



