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Allozyme and Literature Study of Glomeris guttata Risso, 1826, and G. connexa Koch, 1847, a Case of Taxonomic Confusion (Diplopoda: Glomeridae)

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The names Glomeris guttata and G. connexa are each used for at least two different taxa, all of which show a dorsal colour pattern of four rows of light spots on a dark ground. We use allozyme and literature studies to document that the name G. guttata Risso, 1826, can only be applied to a species that is endemic to the Var Valley in Southern France, while G. connexa C. L. Koch, 1847, must be used for the species which has a disjunct distribution in Silesia, Bavaria, Savoy and from the Southern Alps to the Apennines. Based on allozyme data, G. guttata proved to be closely related to G. valesiaca RothenbÏhler, 1899, that is distributed from Western Switzerland along the Alps to Provence. G. tetrasticha Brandt, 1833, is the valid name for the species that was erroneously called G. connexa in the literature; G. tetrasticha is distributed from Eastern Europe over Germany to Switzerland. G. connexa C. L. Koch is clearly separated by its colour pattern from the other three taxa. A separate position is also supported by the allozyme data. Furthermore, we show that G. tetrasticha, which is morphologically similar to the northern populations of G. valesiaca, is clearly differentiated from G. valesiaca and from G. guttata according to the genetic data. A key to the identification of the species, distribution maps and figures with specific colour patterns are presented.

Keywords: Distribution; Morphology; Postglacial colonization; Revision

Document Type: Original Article


Affiliations: University of Berne, Institute of Zoology, Division of Population Biology, Berne, Switzerland

Publication date: May 1, 2001


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