Twenty-four species of mites were found associated with Ips typographus (Linnaeus) collected from pheromone traps in Sweden, bringing to 38 the total recorded for this scolytid. Because three of the species are parasites, it may be possible to use them in biological control of I. typographus. Couplets from an earlier key to these mites in south Germany have been modified to include three of the...

In this article, I try to think through the question, "What distinguishes phenomenology in its original sense?" My intent is to focus on the project and methodology of phenomenology in a manner that is not overly technical and that may help others to further elaborate on or question the singular features that make phenomenology into a unique qualitative form of inquiry. I pay special attention ...

Abstract A set S of vertices in a graph G is paired dominating if every vertex adjacent to and the subgraph induced by contains perfect matching (not necessarily as an subgraph). The domination number, $$\gamma _{\mathrm{pr}}(G)$$ γ pr ( G</mml:m...