A comparison of adhesive performance among six cursorial spider species

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  A comparison of adhesive performance among six cursorial spider species Abstract The ability to adhere to surfaces is particularly relevant for cursorial predatory arthropods like hunting spiders, which often traverse relatively complex environments characterized by large variation in substrate properties. Here, we evaluated the adhesive performance of six hunting spider species that are common in eastern temperate North America and lack specialized tarsi for climbing smooth or inclined surfaces [Lycosidae: Pardosa lapidicina Emerton, 1885 and Rabidosa rabida (Walckenaer, 1837); Oxyopidae: Oxyopes salticus Hentz, 1845; Pisauridae: Pisaurina mira (Walckenaer, 1837); Dolomedidae: Dolomedes triton (Walckenaer, 1837), and Dolomedes scriptus Hentz, 1845]. We tested adhesion performance as shear load resistance (g) on a glass plate, and as the angle of failure (°) when the plate was gradually inclined relative to horizontal. Average angle of failure and shear resistance differed among ...

Systematic revision of Dongmoa Roewer (Arachnida: Opiliones: Podoctidae), with reassignment of two Chinese species from Bonea and description of a new species from Vietnam

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Systematic revision of Dongmoa Roewer (Arachnida: Opiliones: Podoctidae), with reassignment of two Chinese species from Bonea and description of a new species from Vietnam

ABSTRACT

A new species of the genus Dongmoa Roewer is described from Thanh Hoa Province, Vietnam, with its intricate external morphology examined using micro-CT scanning. Until now, Dongmoa included only two species, one from northern Vietnam and another from the Ryukyu Islands, Japan. Here, we provide a revised diagnosis of the genus, with detailed comparisons to the closely related genera Bonea and Erecanana. In addition, two species from Hainan Island, China, previously assigned to Bonea, are transferred to Dongmoa, increasing the total number of recognised species in the genus to five. This study represents the first modern systematic treatment of Dongmoa, substantially refining the traditional Roewerian framework and enabling a clearer delimitation of species distributed across Indochina and Japan. Moreover, the recognition of a previously overlooked but variable morphological structure, here called the insula lunata, highlights its potential relevance for taxonomy within Podoctidae, providing the basis for future phylogenetic studies.

Kury, A. B., Machado, G., & Pham, D. S. (2026). Systematic revision of Dongmoa Roewer (Arachnida: Opiliones: Podoctidae), with reassignment of two Chinese species from Bonea and description of a new species from Vietnam. Journal of Natural History, 60(17–20), 1005–1024. https://doi.org/10.1080/00222933.2026.2650134