Solving a running crab spider puzzle: delimiting Cleocnemis Simon, 1886 with implications on the phylogeny and terminology of genital structures of Philodromidae

BMC Zoology

Research

Renner Luiz Cerqueira Baptista¹  Hector Baruch Pereira Schinelli¹  André Wanderley do Prado²  Daniela Maeda Takiya³ 

[1]Laboratório de Diversidade de Aracnídeos, Universidade Do Brasil/Universidade Federal Do Rio de Janeiro, Av. Carlos Chagas Filho 373, 21941-902, Ilha Do Fundão, Rio de Janeiro, RJ, Brazil

[2]Laboratório de Diversidade de Aracnídeos, Universidade Do Brasil/Universidade Federal Do Rio de Janeiro, Av. Carlos Chagas Filho 373, 21941-902, Ilha Do Fundão, Rio de Janeiro, RJ, Brazil

[3]Programa de Pós-Graduação em Biodiversidade e Biologia Evolutiva, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil

[4]Laboratório de Entomologia, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Cidade Universitária, 21941-902, Rio de Janeiro, RJ, Brazil

关键词: Systematics;    Araneae;    Tibelloides;    Thanatinae;    Philodrominae;   

DOI  :  10.1186/s40850-022-00136-7

 received in 2022-01-07, accepted in 2022-06-07,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundAmong the 16 Neotropical genera of Philodromidae, Cleocnemis has the most troublesome taxonomic situation. Remarkable morphological differences among several genera historically said to be related to Cleocnemis denote controversial notions and general uncertainty about the genus identity. Thus, to clarify the genus limits and contribute to the understanding of Neotropical Philodromidae, we conducted a morphological analysis, along with Bayesian Inference and Maximum Likelihood molecular phylogenetic analyses focusing on Cleocnemis and related genera of Thanatinae. All of the 14 species previously placed in Cleocnemis were studied, and eight of them included in the molecular analyses based on fragments of 28S rDNA, histone H3, 16S rDNA, and cytochrome oxidase I (COI).ResultsCleocnemis was recovered as polyphyletic. Most of its species are distributed into six lineages allocated into five morphologically recognizable groups: Group I [Cleocnemis heteropoda], representing Cleocnemis sensu stricto and two new junior synonyms, Berlandiella and Metacleocnemis; Group II [Tibelloides bryantaecomb. nov., Tibelloides punctulatuscomb. nov., Tibelloides reimoserinom. nov., and Tibelloides taquaraecomb. nov.], representing Tibelloidesgen. rev., which was not recovered as monophyletic; Group III [Fageia moschatacomb. nov., Fageia roseacomb. nov.], representing the genus Fageia; Group IV [“Cleocnemis” lanceolata]; and Group V [“Cleocnemis” mutilata, “Cleocnemis” serrana, and “Cleocnemis” xenotypa]. Species of the latter two groups are considered incertae sedis. Cleocnemis spinosa is maintained in Cleocnemis, but considered a nomen dubium. Cleocnemis nigra is considered both nomen dubium and incertae sedis. We provide a redelimitation of Cleocnemis, redescription, neotype designation, and synonymy of type-species C. heteropoda. Taxonomic notes on composition, diagnosis, and distribution for each cited genus are also provided. Phylogenetic results support the division of Philodromidae into Thanatinae new stat. and Philodrominae new stat. and suggest expansion of their current compositions. Terminology of genital structures of Philodromidae is discussed.ConclusionsOur results bring light to Cleocnemis taxonomy and enhance the understanding of the relationships within Philodromidae, especially through the assessment of neglected Neotropical taxa.

【 授权许可】

CC BY   
© The Author(s) 2022

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