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Algophagus mites (Astigmata: Algophagidae) from the sub-Antarctic Prince Edward Islands: habitat-related morphology and taxonomic descriptions

Marshall, David J.; O'Connor, Barry M.; Pugh, Philip J.A.. 2003 Algophagus mites (Astigmata: Algophagidae) from the sub-Antarctic Prince Edward Islands: habitat-related morphology and taxonomic descriptions. Journal of Zoology, 259 (1). 31-47. 10.1017/S0952836902003023

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Abstract/Summary

Five populations of habitat-specific, morphologically distinct Algophagus mites (Astigmata: Algophagidae) were found to occur on the sub-Antarctic Prince Edward islands. Although these mites did not differ among themselves with respect to idiosomal setal characteristics, which were also similar to those of known sub-Antarctic Algophagus taxa, morphometric analyses revealed leg and idiosomal size differences. In addition to morphometric differences, leg setal positions and porose axillary organ structure, indicated that the morphotypes were taxonomically discrete. The taxa were found to include the known A. antarcticus Hughes, 1955, A. laticollaris Fain, 1974 (new status), a sub-species of A. semicollaris Fain, 1974, and two new species, A. brachytarsus sp. nov. and A. macrolithus sp. nov. With the exception of A. semicollaris, the taxa are described or redescribed in this paper. Morphological features of the females in particular, and notably leg proportions, claw dimensions, and apodeme positions, corroborate discrete terrestrial (A. brachytarsus and A. macrolithus) and aquatic forms (A. antarcticus, A. laticollaris, and A. semicollaris), and vary in a manner suggesting a functional relationship to habitat occupation by the various taxa.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1017/S0952836902003023
Programmes: BAS Programmes > Other
ISSN: 0952-8369
Additional Keywords: functional morphology, marion island, morphometric analysis, Prince Edward Islands, taxonomy; Algophagus
NORA Subject Terms: Biology and Microbiology
Zoology
Date made live: 22 Feb 2012 08:44
URI: http://nora.nerc.ac.uk/id/eprint/12775

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