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 ...

First report of the brown widow spider, Latrodectus geometricus Koch, 1841 (Araneae, Theridiidae) from southern India

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First report of the brown widow spider, Latrodectus geometricus Koch, 1841 (Araneae, Theridiidae) from southern India

Abstract
Latrodectus geometricus (Koch, 1841) is a widow spider native to Africa and introduced in to several countries from both the Americas to Japan. Three adult female L. geometricus with three egg-sacs were observed in Nagercoil, Kanniyakumari district, Tamil Nadu. The present record extends its known distributional range to further south being the southernmost occurrence of the species in India.

R., Kishore & Sadhasivan, Vinod. (2025). First report of the brown widow spider, Latrodectus geometricus Koch, 1841 (Araneae, Theridiidae) from southern India. ENTOMON. 50. 465-468. 

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