SPH ZEROTRYPES COIMBATORENSIS, n. sp- 399 
Nee ee 
probably the flight times of the beetle, #.¢, the egg-laying 
periods, with perhaps the middle portion of September if there 
is a fourth, or portion of a fourth, generation. 
In plantations, coppice areas, etc., all infested trees should 
be at once cut out and either barked, if this is possible, or burnt. 
The periods for treating the plantations would be the three 
weeks succeeding the completion of egg-laying in the different. 
generations. 
We do not yet know whether the insect attacks old trees. 
Points in the life-history requiring further observation. 
:, Further particulars regarding the April generation. 
The information about it has at present been 
collected from careful inspections of old attacked 
poles. “It is fairly reliable, since there is no doubt 
about the time at which these poles were felled. 
2, Is there a generation between the April one and the 
beetles found egg-laying in August? If so, the 
length of time spent in the various stages of eggs 
larva, pupa, and beetle by it. 
3, The length of time spent in the various stages of 
the April and August generations, 
4. Is there a fourth generation ofthe insect? Ifso, is. 
it a complete one or do the larve hibernate as such. 
in their galleries through the cold weather months ? 
5. Does the insect only attack, young trees, or does it 
infest old ones as well? Will it attack healthy 
living trees if no suitable felled ones are available ? 
