The distribution, spatial clustering, and density of trapdoor spiders in two California coastal dune ecosystems

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  The distribution, spatial clustering, and density of trapdoor spiders in two California coastal dune ecosystems Abstract Coastal dune ecosystems support endemic trapdoor spiders, yet population data for these species are limited. We conducted the first coastal dune trapdoor spider population estimation surveys at Moss Landing State Beach (California) and for Aptostichus stephencolberti Bond 2008 at Sunset State Beach using randomly selected 1m 2 quadrats across ~26,000 m 2 per site. Burrow densities were similar between sites (Sunset: 0.287 burrows/m 2 ; Moss: 0.453 burrows/m 2 ), yielding estimated population sizes of ~35,206 and ~30,959 individuals, respectively. However, spatial analyses revealed contrasting patterns of burrow distribution. At Sunset State Beach, burrow presence was strongly associated with vegetation and occurred closer to plants, despite vegetation being randomly distributed. In contrast, no vegetation–burrow association was detected at Moss Landing, alth...

Scorpions of the Horn of Africa (Arachnida: Scorpiones). Part XLI. Pandinops sahil sp. n. from Somaliland (Scorpionidae)

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Scorpions of the Horn of Africa (Arachnida: Scorpiones). Part XLI. Pandinops sahil sp. n. from Somaliland (Scorpionidae)

Abstract


Pandinops sahil sp. n. from Somaliland is described and compared with other species of the genus, fully complemented with color photos of specimens of both sexes of the new species, as well as of their habitat. Pandinops bambii Rossi, 2017 is synonymyzed with Pandinops turieli Kovařík, 2016, syn. n. A key for the species of Pandinops and a map of the distribution of the genus are provided.


Kovařík, F. 2025 . Scorpions of the Horn of Africa (Arachnida: Scorpiones). Part XLI. Pandinops sahil sp. n. from Somaliland (Scorpionidae). Euscorpius, No. 418: 1-10. https://mds.marshall.edu/euscorpius/vol2025/iss418/1/