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HomeBooksConservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia

Conservation
Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia
Special Issue

M Rix, M Harvey, et al

Series: ZooKeys #756
Publisher:Pensoft Publishers
P-ISBN paperback:9789546429247
P-ISSN:1313-2989
Publication date: May 2018
Language: English
Pages: 121
Paperback | € 35.00 | Add to Cart
Status
IN STOCK

Book Description Table of Contents Sample Pages

The shield-backed trapdoor spiders of the Idiosoma nigrum-group are an iconic and threatened component of the Australian mygalomorph spider fauna. Renowned for their unusual phragmotic morphology and biology, they are of long-standing conservation significance, and I. nigrum remains the only spider in Australia to be afforded threatened species status under both State and Commonwealth legislation. Only two shield-backed trapdoor spiders were previously described, although in the last few decades it became apparent that the nigrum-group included more than just two species. Unfortunately, the identifications of many of these taxa were for a long time conflated, and I. nigrum was formally assessed under the Australian Commonwealth’s Environmental Protection and Biodiversity Conservation Act 1999 as what is now known to be five separate species. Revised assessment in 2017 under the Western Australian Wildlife Conservation Act 1950 clarified these taxonomic issues for the purposes of conservation legislation, with the result that I. nigrum was upgraded from Vulnerable to Endangered. However, the broader taxonomic problems have long persisted, with land managers, environmental consultants, ecologists, resources staff and the general public in need of an updated, publicly accessible taxonomy to reflect the actual diversity, distribution and morphological complexity of this charismatic group of spiders. In this monograph, we fully revise the Australian shield-backed trapdoor spiders, integrating morphology with complementary molecular data for seven genes. In total, 15 new species of Idiosoma are here described, taking the total number of species in the nigrum-group to 17. By applying International Union for the Conservation of Nature (IUCN) criteria, we further assess the conservation status of all species, and summarise the biology and phenology of taxa where known.
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