308 



INSECTS INJURIOUS TO THE RASPBERRY. 



FIG. 318. 



in the one cane, thus lengthening the gall and causing it to 

 assume a very irregular shape. In April or May the larva 



penetrates into the pith, where 

 it is more secure from insect 

 and other foes, and there 

 changes to a pupa, from which 

 the perfect beetle escapes early 

 in the summer. 



The eggs are deposited on 

 the young canes probably in 

 July, and the tiny young lar- 

 vae, when hatched, eat into the 



cane, producing, in time, the mischievous results already de- 

 tailed. Fig. 318, c, shows the perfect insect, magnified; 6, 

 another view of the larva, and a the horns at the end of its 

 body, much magnified. The beetle is about three-tenths of 

 an inch long, with a rather small, dark bronzy head, a beau- 

 tifully bright coppery neck, and brownish-black wing-covers. 

 The under surface is of a uniform shining black color. 



The best method of destroying this insect is to cut out the 

 infested canes in the spring and burn them before the beetle 

 escapes. 



No. 178. The Tree Cricket. ^ 



(Ecanthus niveus Serv. 



Of all the insects affecting the canes of the raspberry, 

 probably this is the most troublesome. Fig. 319 represents 

 the male, and Fig. 320 the female. They 

 are about seven-tenths of an inch long, of 

 a pale whitish-green color, and semi-transpa- 

 rent, with several dusky stripes on the head 

 and thorax ; the legs and antennae are also 

 dusky or dark-colored. They are exceed- 

 ingly lively, and the males quite musical, 

 chirping merrily with a loud, shrill note 

 among the bushes all the day. In the 

 autumn they attain full growth, and it is then that the female, 



&n 



FIG. 319. 



