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      Australian Assassins, Part II: A review of the new assassin spider genus Zephyrarchaea (Araneae, Archaeidae) from southern Australia

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          Abstract

          Abstract

          The Assassin Spiders of the family Archaeidae from southern Australia are revised, with a new genus ( Zephyrarchaea gen. n.) and nine new species described from temperate, mesic habitats in southern Victoria, South Australia and south-western Western Australia: Zephyrarchaea austini sp. n., Zephyrarchaea barrettae sp. n., Zephyrarchaea grayi sp. n., Zephyrarchaea janineae sp. n., Zephyrarchaea marae sp. n., Zephyrarchaea marki sp. n., Zephyrarchaea melindae sp. n., Zephyrarchaea porchi sp. n. and Zephyrarchaea vichickmani sp. n. Specimens of the type species, Zephyrarchaea mainae (Platnick, 1991), comb. n., are redescribed from the Albany region of Western Australia, along with the holotype female of Zephyrarchaea robinsi (Harvey, 2002) comb. n. from the Stirling Range National Park. The previously described species Archaea hickmani Butler, 1929 from Victoria is here recognised as a nomen dubium. A key to species and multi-locus molecular phylogeny complement the species-level taxonomy, with maps, habitat photos, natural history information and conservation assessments provided for all species.

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          Protecting the innocent: studying short-range endemic taxa enhances conservation outcomes

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            Phylogeny and historical biogeography of ancient assassin spiders (Araneae: Archaeidae) in the Australian mesic zone: evidence for Miocene speciation within Tertiary refugia.

            The rainforests, wet sclerophyll forests and temperate heathlands of the Australian mesic zone are home to a diverse and highly endemic biota, including numerous old endemic lineages restricted to refugial, mesic biomes. A growing number of phylogeographic studies have attempted to explain the origins and diversification of the Australian mesic zone biota, in order to test and better understand the mode and tempo of historical speciation within Australia. Assassin spiders (family Archaeidae) are a lineage of iconic araneomorph spiders, characterised by their antiquity, remarkable morphology and relictual biogeography on the southern continents. The Australian assassin spider fauna is characterised by a high diversity of allopatric species, many of which are restricted to individual mountains or montane systems, and all of which are closely tied to mesic and/or refugial habitats in the east and extreme south-west of mainland Australia. We tested the phylogeny and vicariant biogeography of the Australian Archaeidae (genus Austrarchaea Forster & Platnick), using a multi-locus molecular approach. Fragments from six mitochondrial genes (COI, COII, tRNA-K, tRNA-D, ATP8, ATP6) and one nuclear protein-coding gene (Histone H3) were used to infer phylogenetic relationships and to explore the phylogeographic origins of the diverse Australian fauna. Bayesian analyses of the complete molecular dataset, along with differentially-partitioned Bayesian and parsimony analyses of a smaller concatenated dataset, revealed the presence of three major Australian lineages, each with non-overlapping distributions in north-eastern Queensland, mid-eastern Australia and southern Australia, respectively. Divergence date estimation using mitochondrial data and a rate-calibrated relaxed molecular clock revealed that major lineages diverged in the early Tertiary period, prior to the final rifting of Australia from East Antarctica. Subsequent speciation occurred during the Miocene (23-5.3 million years ago), with tropical and subtropical taxa diverging in the early-mid Miocene, prior to southern and temperate taxa in the mid-late Miocene. Area cladograms reconciled with Bayesian chronograms for all known Archaeidae in southern and south-eastern Australia revealed seven potentially vicariant biogeographic barriers in eastern Queensland, New South Wales and southern Australia, each proposed and discussed in relation to other mesic zone taxa. Five of these barriers were inferred as being of early Miocene age, and implicated in the initial vicariant separation of endemic regional clades. Phylogeographic results for Australian Archaeidae are congruent with a model of sequential allopatric speciation in Tertiary refugia, as driven by the contraction and fragmentation of Australia's mesic biomes during the Miocene. Assassin spiders clearly offer great potential for further testing historical biogeographic processes in temperate and eastern Australia, and are a useful group for better understanding the biology and biogeography of the Australian mesic zone. Copyright © 2011 Elsevier Inc. All rights reserved.
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              Molecular and morphological systematics of hypogean schizomids (Schizomida�:�Hubbardiidae) in semiarid Australia

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                Author and article information

                Contributors
                URI : urn:lsid:zoobank.org:author:B7D4764D-B9C9–4496-A2DE-C4D16561C3B3
                URI : urn:lsid:zoobank.org:author:FF5EBAF3–86E8–4B99-BE2E-A61E44AAEC2C
                Journal
                Zookeys
                Zookeys
                ZooKeys
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2012
                7 May 2012
                : 191
                : 1-62
                Affiliations
                [1 ]Department of Terrestrial Zoology, Western Australian Museum, Locked Bag 49, Welshpool DC, Perth, Western Australia 6986, Australia
                [2 ]Research Associate, Division of Invertebrate Zoology, American Museum of Natural History, New York, NY 10024, USA
                [3 ]Research Associate, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA 94118, USA
                [4 ]Adjunct Professor, School of Animal Biology, University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
                Author notes
                Corresponding author: Michael G. Rix ( michael.rix@ 123456museum.wa.gov.au )

                Academic editor: M. Kuntner

                Article
                10.3897/zookeys.191.3070
                3353492
                22639534
                26ce1495-94dd-4b38-a135-8acc604e10f5
                Michael G. Rix, Mark S. Harvey

                This is an open access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC-BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 12 March 2012
                : 24 April 2012
                Categories
                Article

                Animal science & Zoology
                conservation,mitochondrial dna,cytochrome c oxidase,taxonomy,palpimanoidea,new species

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