74. L: OBSOLETA, LU TUDARA, L.MATHORA AND LeBIVitt Alas 


Points tn the life histories requiring further observation :— 
1. The number of generations in the year. This is most 
important. Is there a spring generation ? 
2. When the egys are laid ? 
3. Descriptions of the various larve engaged in the 
attack. Which is the most numerous ? 
4. The life history of the insect from the time in October. 
when the females lay eggs and die until some 
time during August when the autumn larve are 
defoliating the forest. 
5. Careful watch should be made for larve when the 
young new|leaves are appearing on the trees in 
the hot weather, and when new flushes of leaves 
appear after a heavy defoliating attack. 
