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 ...

New Contributions to the Study of Spiders (Arachnida, Araneae) in Badajoz (Extremadura, Spain)

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New Contributions to the Study of Spiders (Arachnida, Araneae) in Badajoz (Extremadura, Spain) 

Abstract

This study expands the knowledge of the spider fauna in the province of Badajoz (Extremadura), a region in which this group remains largely unexplored. A total of 160 individuals were captured and identified, belonging to 22 families, 47 genera, and 54 species. Of these, 33 represent new records for the province, and 20 also constitute the first records for the autonomous community of Extremadura, raising the total number of recorded species in Badajoz to 128. 

Cendrero, J., Narro-Martín, A. J., Mora-Rubio, C. & Parejo-Pulido, D. (2025). Nuevas aportaciones al conocimiento de las arañas (Arachnida, Araneae) de la provincia de Badajoz (Extremadura, España). Revista Ibérica de Aracnología 46: 117-122. [publ. end of July]