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 ...

The species of the genus Centruroides Marx, 1890 (Scorpiones: Buthidae) from Panama

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The species of the genus Centruroides Marx, 1890 (Scorpiones: Buthidae) from Panama

Abstract

This review examines the taxonomy, distribution, natural history and scorpionism of the Centruroides species (Scorpiones: Buthidae) of Panama. A taxonomic key is provided to easily identify the five confirmed species from Panama, but also including Centruroides edwardsii (Gervais, 1843) and Centruroides gracilis (Latreille, 1804). The recently reported first record of C. edwardsii in Panama seems to be based on misidentified specimens that belong to Centruroides granosus (Thorell, 1876), a Panamanian endemic species, or Centruroides margaritatus (Gervais, 1841), an introduced synanthropic species. Centruroides gracilis may potentially be present in this country. Only C. granosus and Centruroides panamensis Quintero and Esposito, 2014 are Panamanian endemics, whereas C. granosus and C. bicolor (Pocock, 1898) are the most widely distributed species in this Central American country. Envenomations by these species are frequent in Panama, but generally cause mild symptoms. Maps showing the distribution of the Panamanian Centruroides species are presented.

Miranda, R.J., Armas, L.F.D., Cleghorn, J., Lezcano, J.J., E., L.Y.C., Cambra, R.A. & Murgas, I.L. (2026) The species of the genus Centruroides Marx, 1890 (Scorpiones: Buthidae) from Panama. Zootaxa, 5752 (3), 301–347. https://doi.org/10.11646/zootaxa.5752.3.1