Integrative taxonomy of the genus Nesticus in central Japan, with the description of a new species and redescriptions of N. echigonus and N. gondai (Araneae, Nesticidae)

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  Integrative taxonomy of the genus Nesticus in central Japan, with the description of a new species and redescriptions of N. echigonus and N. gondai (Araneae, Nesticidae) Abstract Species of the genus Nesticus ( Araneae , Nesticidae ) in central Japan are revised based on morphological and molecular analyses of specimens collected from Niigata and Gunma Prefectures. Among them, a putative undescribed species was discovered having clearly distinguishable morphological characters from other known species in the same area. A phylogenetic analysis based on the mitochondrial COI gene was carried out using a maximum-likelihood method to confirm its distinctiveness. The new species, Nesticus yamabushi sp. nov ., is described based on specimens of both sexes. Furthermore, we provide detailed redescriptions of two other closely related species, N. echigonus and N. gondai , to address the lack of information in their original descriptions and facilitate future identifications. This s...

The occasionally broken tibial apophysis of male Oxyopes heterophthalmus (Latreille, 1804) (Araneae: Oxyopidae)

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The occasionally broken tibial apophysis of male Oxyopes heterophthalmus (Latreille, 1804) (Araneae: Oxyopidae)

Abstract and figures
The breakage of the distinctive laterally bent tibial apophysis found on the male palp of Oxyopes heterophthalmus (La-treille, 1804) has been discussed textually in prior works, but no illustrations of such palps have been published. We herein provide the first photographs of post-breakage palps, to aid future workers in recognising injured palps of this species, also discussing how such palps can be readily visually distinguished from teratological morphology. Rotura ocasional de la apófisis tibial del palpo en machos de Oxyopes heterophthalmus (Latreille, 1804) (Araneae: Oxyopidae).

Tchilinguirian, Julien & Sherwood, Danniella. (2025). The occasionally broken tibial apophysis of male Oxyopes heterophthalmus (Latreille, 1804) (Araneae: Oxyopidae). Revista Ibérica de Aracnología. 47. 155–157.