220 



INSECTS INFESTING THE CURRANT. 



the last molt the black spots disappear, and the head becomes 



greenish, with a dark spot on each side. 



Fig. 206. — Imported 

 ^ ^ ^ ,,. Fig. 206. 



Currant \\ orms ; a^ a 



and a, the worms of 

 different sizes — colors, 

 green and black ; b, a 

 segment of a worm's 

 body enlarged. 



When fully grown 

 they measure about 

 nine lines in length. 

 They then desert the 

 plants and hide them- 

 selves beneath the 

 leaves, or enter the 

 earth and spin their 

 tough brownish co- 

 coons. At least two broods are i:)roduced in one season ; the 

 last brood passing the Winter in their cocoons. 



Fiff. 207. 



Fig. 207. — Imported Cur- 

 rant Saw-flies — colors, yellow 

 and black; a. the male en- 

 larged : b, the female enlarged. 



The female fly (Fig. 2076) 

 is of a bright lioncy-yellow — 

 color, the top of the head and 

 tliorax marked ^\•ith black ; the 

 wings expand about six lines 

 ~y and are transparent with black 

 veins. 



The male fly (Fig. 207a) dif- 

 ers so much from the female 

 as to be easily mistaken for 

 a distinct species. It is black, 

 with the top of the thorax 

 marked with yellow, and the tip and the under side of the 

 abdomen are marked with vellow. 



