344 BOARD OP AGRICULTURE. 



The worm is cylindrical, like a caterpillar in appearance^be- 



Fio. 9. — Raspberry Saw-Fly and Larva. 



ing quite unlike its congener, the viscid pear slug, the body 

 beiDg covered with fine hairs, giving it a somewhat velvety 

 aspect. It is pale-green, with " six dorsal rows of tubercles, hav- 

 ing two black bristles and four lateral ones on each side bearing 

 white bristles." Mr. E. Norton, from whom I have quoted, and 

 to whom I am indebted for a single female for description, and 

 to serve as a subject to be drawn for the above cut, farther re- 

 marks in his treatise on this family of insects, that the false 

 caterpillar appears in May. I have seen it early in the summer, 

 in my garden. From its habit of feeding early in the morning 

 or at night, it is scarcely seen, and is difficult to reach. The 

 bushes, however, should be well shaken, and such leaves as have 

 been riddled by them carefully examined, as the worms may 

 often be thus detected. 



The adult female fly is shining black on the head and thorax, 

 while the tips of the mandibles are reddish and three-toothed. 

 The shoulder-tippets (tegulae) and base of the wings are honey 

 yellow, while the wing veins are brown. The legs are honey 

 yellow ; the thighs (femora) brownish, as also the tips of the 

 hind tibiae. The third, fourth and fifth abdominal rings are pale- 

 yellow, the remainder of the abdomen being brownish. This 

 insect differs from the female of the well known rose saw-fly, 

 which is almost entirely black, in the broad light band on the 

 abdomen, in the paler veins of the wings, the different form of 

 the cells, the thickened spot (pterostigma) being less rounded, 

 and in having paler legs. It is also a little larger, measuring 

 just a quarter of an inch in length. 



