CHEMICAL-ANALYSES OF THE DEAD WOOD EATEN BY THE LARVAE OF CERUCHUS-LIGNARIUS AND PRISMOGNATHUS-ANGULARIS (COLEOPTERA, LUCANIDAE)

The contents of chemical components (alkaline extractives, ethanol/ben zene extractives, holocellulose and lignin) were determined for the de ad wood in which the larvae of Ceruchus lignarius (brown rot specialis t) or Prismognathus angularis (decay type generalist) occurred. The va riations of chemical components were small in the samples of C. lignar ius and relatively large in those of P. angularis. It was established that C. lignarius occurred exclusively in the brown rotten wood in adv anced stage of decay, whereas the occurrence of P. angularis was not a s clearly associated with either decay type or its stage.