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

39The sapwood of freshly felled teak is attacked by the cerambycids,XyIotrechus quadripes and X. buqueti. The galleries are mostly found below thebark and affect only the superficial layers of sapwood. The bostrychid’Sinoxylon anale also bores in the sapwood but its damage is not serious. Theheartwood was not found to be attacked by any insect.Teak wood is usedin construction work, furniture, veneers, turnery articles etc. and in all thesecases the sapwood is excluded.It is interesting to note that although Mathur and Singh (1961)recorded 88 species of borers attacking teak wood in India, in this surveyonly two species were found to attack this.Large borersNilSmall borers41. Terminalia alata Heyne ex. Roth.(T. tomentosa (DC.) Wt. Arn.)Sinoxylon anale Les.Xyleborus similis Ferr.Com bretaceae(Bostrychidae)(Scolytidae)These beetles attack the sapwood only and do not cause anyserious loss.Grubs of an undetermined Lepturinae was collected from the borerholes of X. similis. The nature of its association with the latter is not known.Mathur & Singh (1961) have listed the borers of this timber.Large borersNilSmall borers42. Terminalia bellerica (Caertn.) Roxb.Com bretaceaeSinoxylon anale Les. (Bostrychidae)S. crassum Les. ( ,, )Minthea rugicollis W I k. (Lyctidae)