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Issue: Vol. 4543 No. 4: 9 Jan. 2019
Type: Article
Published: 2019-01-09
DOI: 10.11646/zootaxa.4543.4.2
Page range: 498–514
Abstract views: 83
PDF downloaded: 4

Cirolanides wassenichae sp. nov., a freshwater, subterranean Cirolanidae (Isopoda, Cymothoida) with additional records of other species from Texas, United States

Department of Biology, Freeman Aquatic Station, Texas State University, San Marcos TX. 78666 USA Edwards Aquifer Research and Data Center, Texas State University, San Marcos TX. 78666 USA
Texas Parks and Wildlife Department, 4200 Smith School Rd., Austin TX. 78744 USA
Department of Biology, Freeman Aquatic Station, Texas State University, San Marcos TX. 78666 USA
Department of Biological Science, University of Tulsa, 800 S. Tucker Dr., Tulsa OK. 74104, USA
Department of Biological Science, University of Tulsa, 800 S. Tucker Dr., Tulsa OK. 74104, USA
Isopoda Edwards Aquifer Stygobiont Aquifer Biodiversity Cirolanides texensis Speocirolana hardeni cytochrome oxidase 1 (CO1) large ribosomal subunit 28S

Abstract

Cirolanides wassenichae sp. nov., is described from the phreatic zone of the Edwards Aquifer, Texas, USA where it is sympatric with Cirolanides texensis Benedict, 1896. Its status as a new species is based on both morphological and molecular data. Number of antennula articles (3–5 vs 9–15), size (mean sizes of 9.5 and 8.8 mm vs 11.1 and 10.4 mm for males and females, respectively), morphology of pereopods 1–3 (haptorial to semi-haptorial in 1–3 vs only 1 haptorial), and shape of pleotelson (squared, slightly indented vs rounded) are key morphological characteristics that distinguish C. wassenichae sp. nov. from C. texensis. Phylogenies based on cytochrome oxidase 1 and large ribosomal subunit 28S show that divergent morphologies correspond to reciprocally monophyletic groups for both nuclear and mitochondrial datasets. The genus Cirolanides is in need of revision, as our description of C. wassenichae sp. nov. renders C. texensis paraphyletic.

 

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