Remarkable micro-endemism and high congeneric richness: eight new cave-restricted species of Pseudochthonius Balzan, 1892 (Pseudoscorpiones, Chthoniidae) from the Brazilian semi-arid

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  Remarkable micro-endemism and high congeneric richness: eight new cave-restricted species of Pseudochthonius Balzan, 1892 (Pseudoscorpiones, Chthoniidae) from the Brazilian semi-arid Abstract Eight new species of pseudoscorpions belonging to the genus Pseudochthonius Balzan, 1892 are described from the semi-arid region of Brazil. Comprehensive morphological descriptions, diagnostic characters, detailed illustrations, and ecological remarks of the habitats are provided for Pseudochthonius celestialis sp. nov., P. caritas sp. nov., P. patientia sp. nov., P. temperantia sp. nov., P. diligentia sp. nov., P. castitas sp. nov., P. humilitas sp. nov., and P. benignitas sp. nov. In addition, we present a brief discussion of the potential factors underlying the remarkable congeneric species richness observed in this geographically restricted region, as well as the principal threats faced by these species. These findings underscore the importance of conserving caves in order to pr...

A review of the Metashinobius, a genus previously considered monotypic (Araneae, Trechaleidae)

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A review of the Metashinobius, a genus previously considered monotypic (Araneae, Trechaleidae)

Abstract

The female of the genus Metashinobius is recorded for the first time, and two new species from Yunnan, China, are described: M. daweishan sp. nov. (♀) and M. dulongjiang sp. nov. (♂♀). In addition, the diagnosis and description of Metashinobius are further refined. Morphological descriptions and photos of the habitus and copulatory organs are provided.

Xu Y-Q, Wang L-Y, Zhang Z-S, You Y-K (2026) A review of the Metashinobius, a genus previously considered monotypic (Araneae, Trechaleidae). Zoosystematics and Evolution 102(4): 886-891. https://doi.org/10.3897/zse.102.200567