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The book provides richly illustrated identification keys and descriptions of the ca. 240 Nordic springtail species of Entomobryomorpha and Symphypleona, thus completing the survey which was introduced with the first volume on Poduromorpha in 1998.

This is the first part of a multivolume monograph dealing with the about 400 species of springtails (Collembola) which are known to occur in the Nordic countries, including the Arctic Islands. Volume 1 contains richly illustrated identification keys and full descriptions of 161 species of the section Poduromorpha. The geographical distribution and the preferred natural habitats of the species are summarised.
New morphological concepts in species diagnostics are introduced, in particular concerning the mouthparts' morphology which greatly aids in precise identification of the many difficult...