SPH EROTRYPES SIWALIKENSIS, n. sp. 393 
ET 
In the Siwalik Sal areas there is a considerable sale of Sal 
posts (termed locally “ tors %). These are cut during the 
cold weather months and should be all taken out of the forest by 
the end of March. Provided this proviso is strictly adhered 
to there will be little chance of these posts assisting in the 
multiplication of the beetle. The tors will not be attacked 
if stacked in the sun two {or three miles or even less from 
the forest, as the beetle will not lay in rapidly drying bark which 
would not provide sustenance for the larve when they had 
hatched out from the eggs. 
There can be little doubt that this beetle may prove 2 
source of serious danger to coppice coupes if it once becomes 
numerous in adjacent areas of high forest undergoing improve- 
ment by the removal of all stag-headed and sickly trees. As 
the older areas became cleaner the issuing swarms of bark- 
borers would be forced to attack the green trees. It is more 
than probable that coppice areas would be chosen. The attack 
would be certain to begin in patches, the insect working 
outwards from acentre. If patches of trees in coppice or pole 
forest appear to be dying the bark should be carefully exam- 
ined. If covered with small shot holes on the outside, especially 
beneath the projecting edges of flakes and in crevices, portions 
should be stripped off and examined on the inside. If, as will 
be the case when the beetle is numerous, the whole inner bark 
and sapwood are found to be riddled with galleries containing 
larvee, pupz or beetles, the whole patch affected should be cut out 
and the trees either barked at once and the bark burnt or, if the 
barking is not possible, the whole of the cut out material should be 
stacked and burnt. Trap trees should be left and watched. 
Points in the life-history requiring further observation. 
1. The exact length of time spent by the various stages 
of the insect in each generation. Is this about. 
six weeks in the case of the summer generations? 
2. The number of generations in the year. Are the 
following periods approximately correct :— 
1st generation.— Middle of March to middle or end 
of May? 
Eg 
