a survey of beetles damaging commercially impotrtant ... - Icrisat.ac.in

longiclavis.41The holes went deep into the sapwood.The major use of thistimber is in furniture and cabinet making, for making plywoods, packingcases, sports goods and musical instruments. Large trees affected by thetunnels of P. longiclavis cannot be used for these purposesAbout 20 species of borers are known to attack this timber in theIndian subregion which include the one recorded above (Bhasin et. a/., 1958).Large borersNilSmall borersSinoxylon analeS. conigerum Les.45. Vateria indica Linn.Les.(V. malabarica BI.)Heterobostrychus aequalis Wat.Xylothrips flavipes II I.Platypus andrewesi Strohm.P. solidus Wlk.Crossotarsus saundersi Chap.Diacavus assamensis Br.Dipterocarpaceae.Scolytomimus assamensis Schl.Sphaerotrypes sp.Xyleborus similis Ferr.X. interjectus Bland.The small borers listed here were mostly found on debarked timberof these, Haterobostrychus aequalis, Xylothrips flavipes (Bostrychidae) andPlatypus solidus (Platypodidae) were found to cause serious damage.Theirtunnels extend for varying distances in the sapwood and affect its use inplywood and packing case industries, for making tool handles, agriculturalimplements etc. X. similis and X. interjectus were noted to attack sick ordying trees.The beetle, Hectarthrum heros (Passandridae) was collected from logsattacked by X. flavipes which could be predatory on the latter.mined Lepturinae was also collected from this timber.An undeter-