The Phylogenetic Relationships of the Species of the Spider Genus Hypochilus (Araneae, Hypochilidae) PDF Download
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Author: Kefyn M. Catley
Publisher:
ISBN:
Category : Cladistic analysis
Languages : en
Pages : 120
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Author: Kefyn M. Catley
Publisher:
ISBN:
Category : Cladistic analysis
Languages : en
Pages : 120
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Book Description
Author:
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 44
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Hypochilus is a relictual, Nearctic, paleo-endemic spider often described as a “living fossil”. Commonly known as lampshade spiders, these animals are Short Range Endemics restricted to microhabitats consisting of shaded, mesic, rocky outcrops in three montane geographic regions. Together with the monotypic Ectatostica, these genera constitute the depauperate family Hypochilidae. Previous work has had difficulty in reconstructing the interspecific relationships within Hypochilus and revealed extreme interspecific genetic structure. Previous work has also led to the suspicion of cryptic species within two species of the genus, Hypochilus pococki and Hypochilus petrunkevitchi. This thesis tested the utility of some commonly used delimitation methods on SRE taxa with high levels of genetic structure with the objective of delimiting cryptic species in the genus, as well as reconstructing the generic tree. This work definitively reconstructed the Hypochilus tree using Ectatosticta as an outgroup, as well as found cryptic species within the Californian taxon H. petrunkevitchi in need of taxonomic recognition. It further demonstrated the need for new approaches to species delimitation with challenging taxonomic systems such as SRE taxa.
Author: Willis John Gertsch
Publisher:
ISBN:
Category : Hypochilus bonneti
Languages : en
Pages : 14
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Author: Raymond R. Forster
Publisher:
ISBN:
Category : Arachnida
Languages : en
Pages : 122
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"The 'hypochiloids, ' the most primitive known araneomorph spiders, are reclassified on the basis of a cladistic analysis of the results of a comparative morphological survey. Platnick's previous hypothesis--that the family Hypochilidae, containing two genera (Hypochilus, from the United States, and Ectatosticta, from China), represents the sister group of all other araneomorphs--is corroborated, and four new species of Hypochilus (H. pococki, H. coylei, H. sheari, and H. kastoni) are described. However, Platnick's and all other previous arrangements of the remaining 'hypochiloid' genera are rejected in favor of a hypothesis that these austral taxa form a monophyletic group, the superfamily Austrochiloidea, containing two families, the Austrochilidae and Gradungulidae. The family Hickmaniidae Lehtinen, containing only the Tasmanian species Hickmania troglodytes (Higgins and Petterd), is relegated to subfamilial status within the Austrochilidae. In its sister group, the Austrochilinae, Lehtinen's synonymy of Austrochilus manni Gertsch and Zapfe with Thaida peculiaris Karsch is rejected on both the specific and generic levels; four new species of Austrochilus (A. melon, A. schlingeri, A. franckei, and A. newtoni) and one new species of Thaida (T. chepu) are described from Chile and adjacent Argentina. Five new genera of Gradungulidae are described: Spelunga, containing S. cavernicola, new species, from New Zealand; Tarlina, containing five new species (T. noorundi, type species, T. milledgei, T. smithersi, T. daviesae, and T. simipes) and T. woodwardi (Forster), transferred from Gradungula, all from eastern Australia; Kaiya, containing three new species (K. terama, type species, K. bemboka, and K. parnabyi) and K. brindabella (Moran), transferred from Gradungula, all from eastern Australia; Pianoa, containing P. isolata, new species, from New Zealand; and Macrogradungula, containing M. moonya, new species, from Queensland, Australia"--Page 3
Author: Richard L. Hoffman
Publisher:
ISBN:
Category : Hypochilus gertschi
Languages : en
Pages : 8
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Author: Mihael G. Rix
Publisher: PenSoft Publishers LTD
ISBN: 9546425311
Category : Science
Languages : en
Pages : 328
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The Micropholcommatidae are a family of tiny, distinctive araneoid spiders, known from southern-temperate habitats throughout Australasia and Chile. The greatest abundance of individuals and the largest diversity of taxa occur in the cool-temperate rainforests of south-eastern Australia and New Zealand, where micropholcommatid spiders can be very common within moss and leaf litter microhabitats. Although poorly studied biologically and largely neglected taxonomically, the Micropholcommatidae are a diverse lineage, with a significantÿ The monograph in this volume presents a complete generic-level revision of the spider family Micropholcommatidae. The phylogenetic position and internal phylogeny of the family are tested with two separate morphological cladistic analyses, the results of which inform a comprehensive generic-level classification. In total, 26 new species, 12 new genera, one new tribe and two new subfamilies are described, taking the total documented micropholcommatid fauna to 58 species. The distribution and Gondwanan biogeography of the family are also discussed, and natural history information is provided where known. Most importantly, the results of this paper present a taxonomic framework and a phylogenetic foundation for all future research on the Micropholcommatidae; a template by which new species can be described and existing species can be identified, and a valuable dataset for exploring phylogenetic hypotheses.
Author: David Penney
Publisher:
ISBN: 0957453019
Category : Spiders
Languages : en
Pages : 322
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The result is a great increase in multi-disciplinary research and novel avenues incorporating spiders as model organisms.
Author:
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ISBN:
Category :
Languages : en
Pages :
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Author: Jan Bosselaers
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Arachnida
Languages : en
Pages : 332
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