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Redescription of the Stygobiont Amphipod Crustacean Stygobromus pusillus (Crangonyctidae) from the Soviet Union, with Comments on Taxonomic and Zoogeographic Relationships

John R. Holsinger
Journal of Crustacean Biology
Vol. 7, No. 2 (May, 1987), pp. 249-257
Published by: Brill on behalf of The Crustacean Society
DOI: 10.2307/1548605
Stable URL: http://www.jstor.org/stable/1548605
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Redescription of the Stygobiont Amphipod Crustacean Stygobromus pusillus (Crangonyctidae) from the Soviet Union, with Comments on Taxonomic and Zoogeographic Relationships
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Abstract

Stygobromus pusillus (Martynov), a poorly known stygobiont amphipod crustacean from Teletskoye Lake in Siberia, is redescribed on the basis of two topotypes. Synurella apscheronia Derzhavin, another poorly known stygobiont species, is reevaluated and assigned to Stygobromus. The occurrence of these two species in Eurasia, where they are far removed geographically from all other species of Stygobromus which inhabit subterranean groundwaters in North America, is of considerable zoogeographic interest. Morphological and distributional data suggest that Stygobromus was more common in northern parts of the Holarctic region prior to climatic changes in the Pleistocene.

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