149 QUINCE CULTURE. 
A full-grown caterpillar of this moth is shown in Fig. 
128, and a pupa in Fig. 129. 
Remedies of various kinds have been tried and are 
still in use, but the most effectual thus far has been the 
gathering of the larve and co- 
coons by hand, although spraying 
with poison solutions, and espe- 
cially one made with arsenate of 
lead, has proved to be of consid- 
erable value. 
; xy The larva of an insect resem- 
— bling that of the corn-ear worm 
<< (Heliothis armigera), which pu- 
SRV pates in the ground, did great 
4) damage to the leaves of quince 
ZB and apple trees in June and July, 
ly 
Fig. 128. Fig. 129. 
1891, on the grounds of H. 8. Buck of Coeur d’ Alene 
City, Idaho. This insect has not, as yet, been identified 
by entomologists. 
INSECTS GENERALLY DESTRUCTIVE, 
SAN Jose ScAaLe ( Aspidiotus perniciosus. Comstock). 
—'Jhis species of bark louse received 1ts common name 
El mt 
