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New status, species, distribution records and phylogeny for Australian mandibulate Chironomidae (Diptera)

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Abstract

All life-history stages of the Australian Podonominae (Chironomidae) genus Archaeochlus Brundin are revised, providing evidence for recognition of a separate clade, named here as Austrochlus Cranston. Based on molecular and morphological evidence, the clade contains two additional species: Austrochlus parabrundini Cranston, Edward and Cook sp. n. is described from Western Australia where its granite outcrop seepage habitat and geographical range is almost identical to that of the type species Austrochlus brundini Cranston, Edward and Colless (n. comb); Austrochlus centralaustralis Cranston, Edward and Cook sp. n. is described from ephemeral seepage/flows in the MacDonnell and James Ranges of central Australia. Molecular studies reported here confirm species distinctions, relationships to African taxa, and basal relationships within the Chironomidae. Modelled distributions provide evidence for range restriction by seasonal rainfall patterns.
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Keywords: Australia; Chironomidae; Podonominae; phylogeny

Document Type: Research Article

Affiliations: 1: Department of Entomology, University of California, Davis, CA 95616, USA. 2: Department of Zoology, The University of Western Australia, Nedlands, WA 6907, Australia. 3: School of Botany and Zoology, The Australian National University, Canberra, ACT 0200, Australia.

Publication date: November 1, 2002

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