HYMENOPTEEA (SAWFLIES). 



167 



the larvse to fall to the ground, where the soot and lime soon 

 destroys them. 



The Pear and Cherry Sawflij {EriocamjM Jimacina). 



Considerable annoyance is often caused by the larvse of this 

 species upon Cherry and Pear. The larvce (fig. 72) are called 



Fic. 72. — Sluk-woem of Vv,K^(Eriomm-paUmacim). 



mm 



Slug-worms and Snegs, on account of their slimy slug-like ap- 

 pearance. Tliey feed on the upper 

 surface of the leaves, eating only 

 the upper epidermis, and leaving 

 the lower intact (fig. 74). When 

 very numerous the leaves turn 

 brown, die, and fall off in the 

 summer, and a fresh lot of foliage 

 takes its place, thus weakening the 

 trees. We have seen young trees 

 killed outright by them. The 

 adult SawHy (fig. 73) is a small 

 glossy black insect, about one- 

 fourth of an inch in length ; the 

 wings are iridescent, with the 

 middle area smoljy black, and are 

 about three - quarters of an inch 

 from tip to tip. The parent ily 

 comes out of the ground beneath 

 the tree.s in the spring, generally in April 



73. — Prar Sawklv {Krlocamjia 

 Ibiuicina), and cocoon. 



Tn most cases a 



