The insects and arachnids of Canada. Part 2. The bark beetles of Canada and Alaska. Coleoptera: Scolytidae.
In this further volume in a series on Canadian arthropods [see preceding abstract, etc.], information is provided on over 200 species of scolytids that are known or suspected to occur in Canada and Alaska, where many are important pests of forest trees. General accounts of the biology and injuriousness, galleries, distribution and morphology of scolytids are followed by a key to the genera of Scolytidae in Canada and Alaska. The major part of the book is then devoted to the 45 genera represented in the fauna. Keys to the species are accompanied by scanning-electron microscope illustrations of features of diagnostic importance, distribution maps are provided for many species, and notes are provided on the diagnosis, food-plants, distribution and biology (including the damage caused to the tree) for each species. Many adults are illustrated from scanning-electron microscope studies, and many gallery patterns are shown from conventional photographs. A section on host records is arranged as a list of about 30 coniferous species and about 25 broad-leaved genera (and some species) with the species of scolytids that have been recorded on them. The broad-leaved genera include some fruit trees. These are not mentioned separately in the host record list, but where species are pests of fruit trees this is mentioned in the text. At least one species is recorded from a food-plant other than a tree (clover).<new para>ADDITIONAL ABSTRACT:<new para>This handbook to the scolytids of Canada and Alaska, which is the second volume in a series on Canadian arthropods (of which the first has yet to appear), is intended to assist students, amateurs, technicians, entomologists and practising foresters in identifying the 214 species known or suspected to occur there. Keys to the genera and species are provided, together with notes on their biology, gallery patterns, food-plants and distribution. Many photographs of whole and parts of beetles, taken with the aid of the scanning electron microscope, are included.<new para>ADDITIONAL ABSTRACT:<new para>Keys to genera and species are given, and brief descriptions, distribution maps and biological data are provided for 214 species of scolytids known or suspected to occur in Canada and Alaska.