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Phylogeny and classification of the genus-group taxa of Loxandrina (Coleoptera, Carabidae, Abacetini)

Citation

Will, Kipling (2021), Phylogeny and classification of the genus-group taxa of Loxandrina (Coleoptera, Carabidae, Abacetini), Dryad, Dataset, https://doi.org/10.6078/D10411

Abstract

Bayesian and parsimony phylogenetic analyses of combined and partitioned datasets of molecular (partial sequences of 28S, wg, COI, and CAD) and morphological (51 characters of adults) data for exemplar taxa of five outgroup and 76 ingroup abacetine carabids resulted in a monophyletic Loxandrina Erwin & Sims, 1984 that is split into Australian and American clades. The genus Loxandrus LeConte, 1853 as previously delimited is not monophyletic relative to numerous genus-level taxa in Abacetini Chaudoir, 1873 and is restricted to a subgenus of North American species. A reclassification and nomenclatural changes for the subtribe that are consistent with the phylogeny are provided. Three genera are removed from Loxandrina: Aulacopodus Britton, 1940 moved to Pterostichini Bonelli, 1810; Cosmodiscus Sloane, 1907 and Tiferonia Darlington, 1962 moved to Abacetina. Based on the phylogenetic relationships and nomenclatural priority only four genera are recognized in Loxandrina: Cerabilia Laporte, 1867, Zeodera Laporte, 1867, Pediomorphus Chaudoir, 1878, and Oxycrepis Reiche, 1843. All other previously recognized genera are treated as subgenera. The classification change created eight secondary homonyms that are resolved by the proposal of the following: Oxycrepis gebi, replacement name for O. balli (Straneo, 1993); O. amatona, replacement name for O. matoana (Straneo, 1993); O. xiproma, replacement name for O. proxima (Straneo, 1993); O. rasutulis, replacement name for O. suturalis (Straneo, 1993); O. laevinota, replacement name for O. laevicollis (Bates, 1871); O. arvulap, replacement name for O. parvula (Straneo, 1951); O. noaffine, replacement name for O. affinis (Straneo, 1991); O. alutona, replacement name for O. notula (Tschitschérine, 1901). An overview of the morphological characteristics and diagnostic features of Loxandrina taxa is provided. A key and habitus images are provided for identification of genera and subgenera. The possible historical biogeography of the group is discussed in light of their phylogenetic relationships and past geological events.

Methods

Morphological observations and standard PCR and Sanger for sequences.

Usage Notes

There are a series of files that that include data matrices, analysis script files, and output files. These are arranged in zip archived folders, each being a self-contained set of input-script-output files for Bayesian and Parsimony analyses. Also the "final" renamed Nexus file as produced by Mesquite and the classification are included. 

 

  • 80_OTUs.zip   20.36 MB: All input and output files for parallel MrBayes analysis for combined data for 80 OTUs.
  • 80_OTUs_no_morph.zip   20.35 MB: All input and output files for parallel MrBayes analysis for DNA sequence data only for 80 OTUs.
  • 81_OTUs.zip   21.02 MB: All input and output files for parallel MrBayes analysis for combined data and 81 OTUs.
  • GBLOCKS_parameters.JPG   42.95 kB: Image of parameter dialog box from GBlocks run in Mesquite.
  • Lox-MrModelTest.zip   202.25 kB: All MrModelTest input and output files for each locus.
  • Loxandrina_2019.6.nameschanged.nex   426.49 kB: Final Mesquite generated nexus file for all data and taxa.
  • TNT-2019.12.17-Run.1.zip   2.50 MB: All TNT input and output files for parallel analysis run for morphology data for 81 OTS.

Funding

National Science Foundation, Award: DEB-9700764

National Science Foundation, Award: DEB-0444726