Identifier: indianforestinse00stebuoft (find matches)
Title: Indian forest insects of economic importance. Coleoptera
Year: 1914 (1910s)
Authors: Stebbing, Edward Percy, 1870-1960
Subjects: Beetles Forest insects -- India Trees -- Diseases and pests
Publisher: London Eyre & Spottiswoode
Contributing Library: Earth Sciences - University of Toronto
Digitizing Sponsor: MSN

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ae, wings, legs, etc., being free and pressed against the sides and breast. The beetles appear on the wing during the monsoon, July and August,. pair, and the eggs are laid at this period. The egg isLife History. placed in an interstice in the bark, and on hatching out the small grub bores down to the bast and sapwoodand feeds in this. Whilst young the sapwood is only slightly grooved(pi. xvii, fig. 3, A), but as the grub increases in size and its mandibles becomestronger it works down deep into the sapwood, filling the whole of the galleryand depression thus made between the outer shell of the bark and the innerlayer of the sapwood with wood particles and excreta (fig. 3, B). A largeirregular area is thus eaten out which may be as much as 5 in. across and4 in. high, the edges being irregular and stretching at times a fifth or afourth round the tree. When full-fed the grub tunnels down into the woodto pupate, usually from a point at one of the lower edges of the depression PLATE XVII.
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I.<f, made as the larva reaches full growth, and the entrance-hole, C, to thetunnel eaten down into the wood for pupation. Kumaun. North-West Himalaya. FAMILY CERAMBYCIDAE 275 (fig. 3, C). This tunnel is carried deep down into the wood, curving upwardsat its orifice in the outer sapwood. When the grub has got far enoughdown into the hard wood it eats out a pupating-chamber parallel to thelong axis of the tree and of larger diameter than the tunnel leading to it.Both tunnel and pupating-chamber are free of all wood particles andexcreta, and to get rid of these latter a hole is cut through the bark, andthey are pushed out through this. It is the presence of these holes and theheaps of wood-dust and excreta to be seen at the foot of the tree whichrende

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