Seven new species of jumping spiders (Araneae, Salticidae) from Xishuangbanna, China
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ABSTRACT:
SUBMITTER: Wang C
PROVIDER: S-EPMC7511456 | biostudies-literature | 2020 Jan
REPOSITORIES: biostudies-literature
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Project description:In order to resolve better the deep relationships among salticid spiders, we compiled and analyzed a molecular dataset of 169 salticid taxa (and 7 outgroups) and 8 gene regions. This dataset adds many new taxa to previous analyses, especially among the non-salticoid salticids, as well as two new genes - wingless and myosin heavy chain. Both of these genes, and especially the better sampled wingless, confirm many of the relationships indicated by other genes. The cocalodines are placed as sister to lapsiines, in a broader clade with the spartaeines. Cocalodines, lapsiines, and spartaeines are each supported as monophyletic, though the first two have no known morphological synapomorphies. The lyssomanines appear to be non-monophyletic, of three separate groups: (1) Lyssomanes plus Chinoscopus, (2) Onomastus, and (3) the remainder of Old World species. Several previously-inferred relationships continue to be supported: hisponines as sister to the Salticoida, Amycoida as sister to the remaining Salticoida, and Saltafresia as monophyletic. The relationship of Salticus with Philaeus and relatives is now considered well enough corroborated to move the latter into the subfamily Salticinae. A new clade consisting of the Plexippoida + Aelurilloida + Leptorchesteae + Salticinae is recognized. Nungia is found to be an astioid, and Echeclus, Gedea and Diplocanthopoda to be hasariines. The euophryines are corroborated as monophyletic. The agoriines Agorius and Synagelides are salticoids, within the sister group to amycoids, but their further placement is problematical, perhaps because of their nuclear ribosomal genes' high GC bias, as also seen in the similarly problematic Eupoa.
| S-EPMC4195940 | biostudies-literature
Project description:The harmochirine jumping spiders include the New World Habronattus, notable for their complex courtship displays, and Pellenes, found throughout the Old World and North America. Five new species of Habronattus and one new species of Pellenes are here described from North America: Habronattus aestus, sp. n., Habronattus chamelasp. n., Habronattus empyrussp. n., Habronattus luminosussp. n., Habronattus robertisp. n., and Pellenes canadensissp. n. For each of the new species, photographs of living specimens are given, as well as notes on habitat. The new subgenus Pellenattus is described for the subgroup of Pellenes restricted to North America, with type species Pellenes peninsularis Emerton, 1925. Species placed in Pellenes (Pellenattus) are Pellenes apacheus Lowrie & Gertsch, 1955, Pellenes canadensissp. n., Pellenes crandalli Lowrie & Gertsch, 1955, Pellenes dorsalis (Banks, 1898b), Pellenes grammaticus Chamberlin 1925, Pellenes levii Lowrie & Gertsch, 1955, Pellenes limatus Peckham & Peckham, 1901, Pellenes longimanus Emerton, 1913, Pellenes peninsularis Emerton, 1925, Pellenes shoshonensis Gertsch, 1934, and Pellenes washonus Lowrie & Gertsch, 1955. Pellenes wrighti Lowrie & Gertsch, 1955 is synonymized with Pellenes peninsularis. Attention is drawn to an undescribed species of Habronattus from Canada whose only known specimen is apparently lost.
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Project description:Abstract Clubionid spiders from Xishuangbanna, Yunnan Province, China are studied. A total of seven genera and 13 species have been found, including two new genera with one new species each, i.e., Ramosatidia Yu & Li, gen. nov., with R.situ Yu & Li, sp. nov. (♂♀) as the type species and Sinostidia Yu & Li, gen. nov., with S.shuangjiao Yu & Li, sp. nov. (♂♀) as the type species. Five additional new species are Sinostidiadujiao Yu & Li, sp. nov. (♂♀), Matidiaxieqian Yu & Li, sp. nov. (♂♀), Nusatidiachangao Yu & Li, sp. nov. (♂♀), N.mianju Yu & Li, sp. nov. (♀), and N.subjavana Yu & Li, sp. nov. (♀). The following genera and species are reported from China for the first time: Malamatidia Deeleman-Reinhold, 2001, Pteroneta Deeleman-Reinhold, 2001, Malamatidiazu Jäger & Dankittipakul, 2010, Nusatidiaaeria (Simon, 1897), N.camouflata Deeleman-Reinhold, 2001, Porrhoclubionapteronetoides (Deeleman-Reinhold, 2001), and Pteronetaultramarina (Ono, 1989). Malamatidiachristae Jäger & Dankittipakul, 2010 syn. nov. is a junior synonym of Malamatidiazu. Nusatidiarama Deeleman-Reinhold, 2001 syn. nov. is synonymised with N.aeria (Simon, 1897).
| S-EPMC8530997 | biostudies-literature
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.
| S-EPMC5824460 | biostudies-literature