Lucid key to the world species of Ips (Coleoptera: Curculionidae: Scolytinae)
A Lucid matrix key designed to allow maximum diagnostic inference from male or female specimens of Ips DeGeer, 1775, including damaged specimens. The key accompanies an article in the Canadian Journal of Arthropod Identification (Douglas et al. in press). This article includes a dichotomous key, and illustrated diagnostic fact sheets for all Ips species and subspecies.