THE CANADIAN HORTICULTURIST. 



when in succession as shown in Fig. 

 1606, there is no excuse for not discov- 

 ering and destroying them. 



From these cocoons the reddish- 

 brown moths emerge in late June and 

 early July and soon lay the eggs which 

 complete the life cycle. These moths 

 are quite large, as shown in Fig. 1607, 

 and are easily distinguishable from all 

 but a few closely related species, by the 

 two oblique, nearly parallel bands of 

 white crossing the fo r e wings. 



quite similar to the apple tree tent-cater- 

 pillar in appearance or habits and which 

 may do damage in the orchards, though 

 not usually so abundant as these spe- 

 cies. The forest tent-caterpillar (Clisio- 

 campa disstrid) ordinarily feeds in the 

 woods upon the maple ; but frequently 

 mingles with its relatives in the orchards 

 and is distinguishable from them only 

 by a few minor characteristics. The 

 egg-masses, are similarly placed but are 

 cut off squarely at the ends instead of 



Fi«- 1606. — Cocoons of the Apple-tree Tent-Caterpillar. Natural size (Original.) 



Most of the measures to be taken 

 against this pest have already been in- 

 dicated but may be concisely summar- 

 ized as follows : Protect and encourage 

 birds ; destroy the egg- bands and co- 

 coons and reward the children for col- 

 lecting them ; burn out or crush the 

 nests while the caterpillars are in them ; 

 spray the trees with Paris green, and 

 last, but not least, see that wild cherry 

 trees, crabapple trees and neglected 

 apple trees along the roadsides are kept 

 free from the pests or cut down. 



There are two other insects which are 



being somewhat sloping as are those of 

 the apple-tree caterpillar. This is 

 caused by the eggs in the end rows of 

 the bunch, as well as those in the cen- 

 ter, being placed upright ; while the end 

 rows of the first described masses are 

 inclined. The tents are more delicate 

 and less conspicuous and are frequently 

 lacking ; the caterpillars have a row of 

 diamond-shaped white spots along the 

 back instead of a single white line ; and 

 the parallel bands across the wings of 

 the moths are dark rather than white 

 and the space between the lines is darker. 



