Kryptochroma: a new genus of bark-dwelling crab spiders (Araneae, Thomisidae)

  • Miguel Machado Laboratório de Aracnologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil https://orcid.org/0000-0003-3193-9830
  • Rafaela Viecelli Laboratório de Aracnologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
  • Catherine Guzati Laboratório de Aracnologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
  • Cristian J. Grismado División Aracnología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Buenos Aires, Argentina https://orcid.org/0000-0002-1260-7964
  • Renato A. Teixeira Laboratório de Aracnologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil https://orcid.org/0000-0002-1756-9821
DOI: https://doi.org/10.5852/ejt.2021.778.1565
Keywords: Stephanopinae, taxonomy, new species, new records, Stephanopis

Abstract

A recent phylogenetic analysis has shown that the genus Stephanopis comprises several different lineages of bark-dweller crab spiders. The ones with South American distribution that present a close relationship with other Neotropical genera like Epicadus, Onocolus, Rejanellus and Epicadinus were recovered in a single clade, with good support and stability. Here, we present a taxonomic review of Stephanopis species attributed to the ‘pentacantha clade’, proposing the new genus Kryptochroma Machado gen. nov. to accommodate them. New distribution records are provided and the following species are described for the first time: Kryptochroma gigas Machado & Viecelli gen. et sp. nov., Kryptochroma hilaris Machado & Teixeira gen. et sp. nov., Kryptochroma quadrata Machado & Viecelli sp. nov. and Kryptochroma septata Machado & Teixeira sp. nov. The species Stephanopis borgmeyeri is considered a nomen dubium, Stephanopis aheneus is a junior synonym of Epicadus tuberculatus, Stephanopis quimiliensis is transferred to Ulocymus and Stephanopis stelloides is transferred to Epicadus, being Epicadus stelloides the senior synonym of Stephanopis salobrensis, Stephanopis trilobata and Epicadus caudatus.

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Published
2021-11-03
How to Cite
Machado, M., Viecelli, R., Guzati, C., Grismado, C. J., & Teixeira, R. A. (2021). Kryptochroma: a new genus of bark-dwelling crab spiders (Araneae, Thomisidae). European Journal of Taxonomy, 778(1), 26–70. https://doi.org/10.5852/ejt.2021.778.1565
Issue
Vol. 778 (2021)
Section
Research article

Copyright (c) 2021 Miguel Machado, Rafaela Viecelli, Catherine Guzati, Cristian J. Grismado, Renato A. Teixeira

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