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

Small borers18Sinoxylon conigerum Les. (Bostrychidae)Stored logs of this timber were found to be heavily attacked by thecerambycid, Xylotrechus sp. The borer holes were about 3 mrn. indiametar and were distributed at about 2 cm. apart all over the log. Sinceits attack is confined mostly to logs of small diameter, it is not a seriousproblem for its use in house construction, etc.sapwood.The bostrychid, Sinoxylon conigerum cause only minor damage toBhasin & Roonwal(1958) have recorded 21 species of borers damagingthis timber. The borers recorded here have not been listed by them.Large borers15. Ceiba pentandra (Linn,) Gaertn.(Eriodendron anfractuosum DC.)Bom bacaceaeBatocera rufornaculata De Geer (Cerambycidae)Batocera sp. ( ,* )Small borersSinoxylon anale Les.(Bostrychidae)Dinoderus sp. ( ,. )Xylothrips flavipes Ill. ( It )Platypus cavus Strohm. (Platypodidae)P. latifinis Wl k ( ,, )P .solidus Wlk. ( ,l )Xyleborus interjectus Bland (Scolytidae)The freshly cut timber is very susceptible to damage by Batocerarufomaculata (Fig. 7 ) which bore initially into the sapwood and subsequentlyinto the heartwood resulting in the formation of large longitudinal tunnels.Large quantities of this timber are often stored for the manufacture ofmatches, light packing cases etc. The bostrychid, Sinoxylon anale causeserious damage to the sapwood of stored logs in a short time. Xylothripsflavipes attacks both round logs as well as finished products. The platy-podids, P. latifinis, P. solidus and the scolytid, Xyleborus interjectus attack