112 QUINCE CULTURE. 
exceedingly hardy and vigorous, and readily adapts itself 
to any food available. 
Remedies.—There is no surer method of destroying 
them than to gather the cocoons as they hang on the trees 
and burn them. They are easily seen during the winter. 
This is emphatically applying the ounce of prevention 
that will save the pound of cure. ‘Two insect friends aid 
us, both ichneumons. The Cryptus tnquisitor (Say) 1s 
about two-fifths of an inch long. The Hemiteles thyri- 
dopteryx (Riley) is about one-third of an inch long. 
Fig. 95. Fig. 96.— Male. Fig. 97.— Female. 
CRYPTUS INQUISITOR. HEMITELES THYRIDOPTERYX. 
Five or six of these sometimes occupy the body of a 
single bag-worm. After destroying the worm, they spin 
for themselves, within its cocoon, small white cocoons. 
12. THe Corn Emperor Motu, THE Io EMPEROR 
Motx (Hyperchiria Io, Linn., Saturnia Jo, Harris, Hy- 
perchiria varia, Walker).—The common name of this 
moth probably came from 
its feeding on corn and for- 
aging on both trees and veg- 
etables, a very uncommon 
habit with insects. It not 
only feeds on the quince, but 
Fig. 98.—LARVA OF THE CORN : 
EMPEROR MOTH. a wide range of trees and 
vegetables. The moth is 
very beautiful, and only flies at night. The sexes differ 
both in size and color, the male being the smaller. His 
color is a deep yellow, with purplish brown markings. His 
