Integrative taxonomy of the cycad-associated weevils of the Tranes group, with a revision of Tranes Schoenherr, a key to all taxa and an assessment of host specificity in the group (Coleoptera: Curculionidae: Molytinae).
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引用次数: 0
Abstract
Australia is a main centre of diversity for extant cycads (Cycadophyta), harbouring 4 genera and 85 named species and subspecies. Three cycad genera, Bowenia , Lepidozamia and Macrozamia , serve as hosts for four weevil genera of the Tranes group, Tranes Schoenherr, Miltotranes Zimmerman, Demyrsus Pascoe and Siraton Hustache. Several morphologically based taxonomic studies have been undertaken on some of these genera recently, but their classification, diversity and species delineations have not been evaluated using an integrative taxonomic approach. In the present study, we combine morphological characters and mitochondrial DNA data to assess the taxonomic status of taxa in this group. Different methods of molecular species delimitation, especially distance-based ones, generally provide strong support for taxon concepts derived from morphological characteristics, demonstrating that these are well able to delineate natural species and assess taxonomic diversity in this group of weevils. Exceptions are that molecular analyses indicate Siraton internatus (Pascoe) to be more closely related to Demyrsus than to S. roei (Boheman), rendering Siraton a paraphyletic taxon, and a genetically distinct but morphologically cryptic species of Miltotranes to occur south of Cairns. A key to all genera and species of the Tranes group is presented. The genus Tranes and its four previously named species are redescribed and six species are newly described, T. chadwicki sp. nov., T. forsteri sp. nov., T. kgariensis sp. nov., T. occidentalis sp. nov., T. terryae sp. nov. and T. tinctipennis sp. nov., and a lectotype is designated for the name Tranes insignipes Lea, 1929. The salient characters and distribution ranges of all Tranes species are illustrated, and their host specificities are assessed. ZooBank: urn:lsid:zoobank.org:pub:45DE986E-A8B3-4247-B056-DF3126D4B31D.
期刊介绍：
Invertebrate Systematics (formerly known as Invertebrate Taxonomy) is an international journal publishing original and significant contributions on the systematics, phylogeny and biogeography of all invertebrate taxa. Articles in the journal provide comprehensive treatments of clearly defined taxonomic groups, often emphasising their biodiversity patterns and/or biological aspects. The journal also includes contributions on the systematics of selected species that are of particular conservation, economic, medical or veterinary importance.
Invertebrate Systematics is a vital resource globally for scientists, students, conservation biologists, environmental consultants and government policy advisors who are interested in terrestrial, freshwater and marine systems.
Invertebrate Systematics is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.
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