a reconsideration of the classification of the spider infraorder mygalomorphae (arachnida araneae) based on three nuclear genes and morphology复议的分类蜘蛛infraorder猛蛛亚目(蛛形纲蜘蛛类)基于三个核基因和形态.pdfVIP
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a reconsideration of the classification of the spider infraorder mygalomorphae (arachnida araneae) based on three nuclear genes and morphology复议的分类蜘蛛infraorder猛蛛亚目(蛛形纲蜘蛛类)基于三个核基因和形态
A Reconsideration of the Classification of the Spider
Infraorder Mygalomorphae (Arachnida: Araneae) Based
on Three Nuclear Genes and Morphology
1 2 1 3
Jason E. Bond *, Brent E. Hendrixson , Chris A. Hamilton , Marshal Hedin
1 Department of Biological Sciences and Auburn University Museum of Natural History, Auburn University, Auburn, Alabama, United States of America, 2 Department of
Biology, Millsaps College, Jackson, Mississippi, United States of America, 3 Department of Biology, San Diego State University, San Diego, California, United States of
America
Abstract
Background: The infraorder Mygalomorphae (i.e., trapdoor spiders, tarantulas, funnel web spiders, etc.) is one of three main
lineages of spiders. Comprising 15 families, 325 genera, and over 2,600 species, the group is a diverse assemblage that has
retained a number of features considered primitive for spiders. Despite an evolutionary history dating back to the lower
Triassic, the group has received comparatively little attention with respect to its phylogeny and higher classification. The
few phylogenies published all share the common thread that a stable classification scheme for the group remains
unresolved.
Methods and Findings: We report here a reevaluation of mygalomorph phylogeny using the rRNA genes 18S and 28S, the
nuclear protein-coding gene EF-1c, and a morphological character matrix. Taxon sampling includes members of all 15
families representing 58 genera. The following results are supported in our phylogenetic analyses of the data: (1) the
Atypoidea (i.e., antrodiaetids, atypids, and mecicobothriids) is a monophyletic group sister to all other mygalomorphs; and
(2) the families Mecicobothriidae, Hexathelidae
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