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Revalidation of the jumping spider genus Cheliceroides Zabka, 1985 based on molecular and morphological data (Araneae, Salticidae).

ABSTRACT: The monotypic genus Cheliceroides Żabka, 1985 is revalidated based on both molecular sequence data (ultra-conserved elements and protein coding genes of mitochondrial genomes) and morphological evidence. Our molecular phylogenetic analyses show that Cheliceroides is not closely related to Colopsus Simon, 1902, not even in the same tribe, and a comparative morphological study also demonstrates significant differences in the genital structures (i.e. in the shape of embolus, and with or without pocket on epigynum) of the two genera. Therefore, we remove Cheliceroides from the synonymy of Colopsus, and its generic status is revalidated.

SUBMITTER: Lin L

PROVIDER: S-EPMC10995608 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Revalidation of the jumping spider genus Cheliceroides Żabka, 1985 based on molecular and morphological data (Araneae, Salticidae).

Lin Long L Yang Zhiyong Z Zhang Junxia J

ZooKeys 20240327

The monotypic genus Cheliceroides Żabka, 1985 is revalidated based on both molecular sequence data (ultra-conserved elements and protein coding genes of mitochondrial genomes) and morphological evidence. Our molecular phylogenetic analyses show that Cheliceroides is not closely related to Colopsus Simon, 1902, not even in the same tribe, and a comparative morphological study also demonstrates significant differences in the genital structures (i.e. in the shape of embolus, an ...[more]

PMID: 38586076

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Project description:BackgroundHabronattus is a diverse clade of jumping spiders with complex courtship displays and repeated evolution of Y chromosomes. A well-resolved species phylogeny would provide an important framework to study these traits, but has not yet been achieved, in part because the few genes available in past studies gave conflicting signals. Such discordant gene trees could be the result of incomplete lineage sorting (ILS) in recently diverged parts of the phylogeny, but there are indications that introgression could be a source of conflict.ResultsTo infer Habronattus phylogeny and investigate the cause of gene tree discordance, we assembled transcriptomes for 34 Habronattus species and 2 outgroups. The concatenated 2.41 Mb of nuclear data (1877 loci) resolved phylogeny by Maximum Likelihood (ML) with high bootstrap support (95-100%) at most nodes, with some uncertainty surrounding the relationships of H. icenoglei, H. cambridgei, H. oregonensis, and Pellenes canadensis. Species tree analyses by ASTRAL and SVDQuartets gave almost completely congruent results. Several nodes in the ML phylogeny from 12.33 kb of mitochondrial data are incongruent with the nuclear phylogeny and indicate possible mitochondrial introgression: the internal relationships of the americanus and the coecatus groups, the relationship between the altanus, decorus, banksi, and americanus group, and between H. clypeatus and the coecatus group. To determine the relative contributions of ILS and introgression, we analyzed gene tree discordance for nuclear loci longer than 1 kb using Bayesian Concordance Analysis (BCA) for the americanus group (679 loci) and the VCCR clade (viridipes/clypeatus/coecatus/roberti groups) (517 loci) and found signals of introgression in both. Finally, we tested specifically for introgression in the concatenated nuclear matrix with Patterson's D statistics and DFOIL. We found nuclear introgression resulting in substantial admixture between americanus group species, between H. roberti and the clypeatus group, and between the clypeatus and coecatus groups.ConclusionsOur results indicate that the phylogenetic history of Habronattus is predominantly a diverging tree, but that hybridization may have been common between phylogenetically distant species, especially in subgroups with complex courtship displays.

Dataset Information

Revalidation of the jumping spider genus Cheliceroides Zabka, 1985 based on molecular and morphological data (Araneae, Salticidae).

Publications

Revalidation of the jumping spider genus <i>Cheliceroides</i> Żabka, 1985 based on molecular and morphological data (Araneae, Salticidae).

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Dataset Information

Revalidation of the jumping spider genus Cheliceroides Zabka, 1985 based on molecular and morphological data (Araneae, Salticidae).

Publications

﻿Revalidation of the jumping spider genus <i>Cheliceroides</i> Żabka, 1985 based on molecular and morphological data (Araneae, Salticidae).

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Revalidation of the jumping spider genus <i>Cheliceroides</i> Żabka, 1985 based on molecular and morphological data (Araneae, Salticidae).