136 QUINCE CULTURE, 
through the numerous holes seen in the bark, each sim- 
ilar to that by which their mother first entered. Fig. 
ma 122 shows _ perfora- | | 
tions of bark, and 
Fig. 123 a breeding 
chamber under the 
bark, both natural 
size. 
Remedies.—lf in a 
vigorous tree, flowing 
sap may drown the 
larve, hence their 
supposed preference 
for weakened trees, 
and the need of good 
culture and care. 
Trees very badly in- 
en 129. fested should be Fig. 123. 
burned in the winter, when all the insects are in them 
1 the larval state. They have a number of parasitic 
SSS 
Fig. 124.—PARASITE OF LARVA (Chiropachys colon). 
enemies, one of which (Chircpackys colon, enlarged eight 
diameters), is shown in Fig. 124, and they are also the 
