A comparison of adhesive performance among six cursorial spider species

Posted by
  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 ...

A new tarantula species of the genus Orphnaecus Simon, 1892 (Araneae: Theraphosidae) from Mindanao Island, Philippines

Posted by

 


A new tarantula species of the genus Orphnaecus Simon, 1892 (Araneae: Theraphosidae) from Mindanao Island, Philippines

The genus Orphnaecus currently comprises three species found in the Philippine islands of Luzon, Polillo, and Dinagat. Orphnaecus mimbilisanensis sp. n. is described based on specimens collected from Mimbilisan Protected Landscape, Misamis Oriental in Mindanao Island, Philippines. The new species is the first Orphnaecus species of the vast mainland Mindanao and is distinguished from all known congeners by its carapace profile, leg, and genital morphology, as well as distribution.

(2025). A new tarantula species of the genus Orphnaecus Simon, 1892 (Araneae: Theraphosidae) from Mindanao Island, Philippines. Far Eastern entomologist. 522. 10.25221/fee.522.2.