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Issue: Vol. 1382 No. 1: 14 Dec. 2006
Type: Monograph
Published: 2006-12-14
DOI: 10.11646/zootaxa.1382.1.1
Page range: 1–74
Abstract views: 143
PDF downloaded: 4

Taxonomy of the Proisotoma complex. Redefinition of genera and description of new species of Scutisotoma and Weberacantha(Collembola, Isotomidae)

Moscow State Pedagogical University, Kibalchich str., 6, korp. 5, Moscow, 129164 Russia
Institute of Ecology and Evolution RAN, Leninski pr., 33, Moscow 119071 Russia
Zoological Museum, Lund University, Helgonavägen 3, S-223 62 Lund, Sweden
Collembola Isotomidae Proisotoma complex taxonomy new genus new species Palaearctic Northern Nearctic

Abstract

The paper provides new information on morphological characters which are useful in generic diagnostics of the Proisotoma complex of Isotomidae. Based on this information, a number of known species are excluded from the redefined Proisotoma s. str. and moved to the genus Scutisotoma Bagnall, 1949, which is again given generic status. The following genera are given more precise definitions: Subisotoma Stach, 1947, Ballistura Börner, 1906, Proisotoma Börner, 1901 and Weberacantha Christiansen, 1951. A new genus, Strenzketoma, is erected for the species “Proisotoma” buddenbrocki Strenzke. Scutisotoma titusi (Folsom), S. muriphila (Grinbergs), and S. ladaki (Denis) are redescribed. Fourteen new species of the genus Scutisotoma (S. acorrelata sp.n., S. baica sp.n., S. dodecocellata sp.n., S. indigirka sp.n., S. karadagi sp.n., S. kolymica sp.n., S. longisensilla sp.n., S. matalini sp.n., S. millimetrica sp.n., S. montana sp.n., S. nicksmeti sp.n., S. schisti sp.n., S. stachanoremi sp.n., S. tenuidentifera sp.n.) and two new species of Weberacantha (W. echinodermata sp.n., W. magnomucrella sp.n.) are described. Types of S. ananevae (Babenko & Bulavintsev), S. armeriae (Fjellberg), S. christianseni (Stach), S. oirota (Vilkamaa), S. stepposa (Martynova), S. tianshanica (Martynova), and S. tolerans (Babenko) have been studied. Keys to genera and to the known Holarctic species of Scutisotoma Bagnall and Weberacantha Christiansen are given.

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