Indian forest insects of economic importance Coleoptera . *,• • 4»> • V -•H \ and larval -alleik-s nt Sphaerotrypesglobulus, lilandford, on the outer sapwood of ll) )1) J II tl 11 4l f <) 111 ,* Jl f ll \ ,1 \\\\-\f\\** ( , .1 , t i . 1 I ),-/-,, FAMILY SCOLYTIDAE 479 This beetle is essentially a bast tunneller, the female requires thefresh cambium layer of the tree to oviposit in, and the Damage Committed b require the same to feed in. Thus the insect willin the Forest. only attack either standing sickly trees in the forest or newly felled ones. If, however, there are none of these
Indian forest insects of economic importance Coleoptera . *,• • 4»> • V -•H \ and larval -alleik-s nt Sphaerotrypesglobulus, lilandford, on the outer sapwood of ll) )1) J II tl 11 4l f <) 111 ,* Jl f ll \ ,1 \\\\-\f\\** ( , .1 , t i . 1 I ),-/-,, FAMILY SCOLYTIDAE 479 This beetle is essentially a bast tunneller, the female requires thefresh cambium layer of the tree to oviposit in, and the Damage Committed b require the same to feed in. Thus the insect willin the Forest. only attack either standing sickly trees in the forest or newly felled ones. If, however, there are none of these in the forestand the insect is in great abundance, it will attack healthy green infests trees from the young pole stage onwards. Serious attacks ofthe insect will be found to commence at a centre and spread con-centrically outwards. This and the fact that the pest is capable of in-creasing very rapidly in numbers when conditions are favourable to itconstitute the danger of this beetle in the forest. It must be rememberedalso that it
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1914
