APPLE PESTS 541 
Tent Caterpillars. 1 and 4, larvae of M. erosa; 2, cocoon of M. erosa; 38, tent of 
M. erosa; 5, egg mass and nest of M. pluvialis ; 6, cluster of caterpillars on trunk 
of apple, M. erosa,; 7, adult of MU. erosa,; 8, egg mass of Western Apple Tree Tent 
Caterpillars. 
