332 INSECTS INJURIOUS TO THE STRAWBERRY. 



there will be found in each, about the centre, a small, milk- 

 white, footless grub, semi-transparent, with a smooth, glossy- 

 skin, a wrinkled surface, and a few fine, short hairs. Its jaws 

 are pale brown, and its length at this period is about one- 

 sixteenth of an inch, the body tapering a little towards each 

 extremity. This insect doubtless changes to a pupa within 

 the gall, from which flies escape later in the season, or early 

 the following spring. 



No. 200.— The Strawberry Saw-fly. 



Emphytus maculatus Norton. 



This insect in the perfect state is also a four-winged fly, 

 which in the larval condition is very destructive to the leaves 

 of the strawberry. The accompanying figure, 346, illustrates 

 the insect in its various stages ; 1 shows the under side of 

 the pupa, 2 a side view of the same, 3 the perfect fly, all 



Fig. 346. 



magnified ; 4 the larva crawling, 6 the same at rest, 5 the 

 perfect insect with its wings closed, and 7 the cocoon, all of 

 the natural size; 8 one of the antennae, and 9 an egg, both 

 magnified. The egg is placed within the substance of the 

 stem of the leaf early in May by means of the peculiar saw- 



