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 ...

Outdoor records of Erigone dentosa on Texel and further records of Steatoda nobilis (Araneae: Linyphiidae, Theridiidae) in the Netherlands

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Outdoor records of Erigone dentosa on Texel and further records of Steatoda nobilis (Araneae: Linyphiidae, Theridiidae) in the Netherlands

Abstract

In July 2024, four males of the North American dwarf spider species Erigone dentosa O. Pickard-Cambridge, 1894 were found on the Texel seashore near the ferry port. Furthermore, new records of the neozoic species Steatoda nobilis (Thorell, 1875) for the Netherlands are presented, including a record far from urban areas from a shed used as a bird observatory in Goedereede.

Lauterbach S (2025), Outdoor records of Erigone dentosa on Texel and further records of Steatoda nobilis (Araneae: Linyphiidae, Theridiidae) in the Netherlands, Heft 70, 54-57; DOI:10.30963/aramit7010