A pseudoscorpion clinging to a cave salamander: phoresy or failed predation?

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  A pseudoscorpion clinging to a cave salamander: phoresy or failed predation? Abstract Pseudoscorpions are well known for phoretic associations with arthropods, but interactions with amphibians are rarely documented. Here we report a pseudoscorpion attached to the left palpebral region of an adult male Italian cave salamander, Speleomantes italicus , observed during a visual survey in a karst cave in Tuscany, Italy. The pseudoscorpion, assigned on the basis of visible morphology and locality to Chthonius cf. elongatus , was grasping a minute cutaneous fold on the lower margin of the left upper eyelid with one chela while the salamander moved slowly over the rock surface. No handling was performed and the initial contact between the two animals was not observed. The event therefore cannot be interpreted unambiguously, but may represent opportunistic phoresy or defensive attachment following a failed predation attempt. To our knowledge, this is the first published observation of a ...

Description of the first continental European species of the huntsman spider Cebrennus (Araneae, Sparassidae), confirming the presence of the genus in the region

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Description of the first continental European species of the huntsman spider Cebrennus (Araneae, Sparassidae), confirming the presence of the genus in the region

Abstract

Because of its wide variety of climates and habitats, the Iberian Peninsula harbors a rich and diverse arachnological fauna, including numerous endemisms. This is especially true for habitats like arid and semiarid areas. Many of them are threatened despite containing interesting –and sometimes uncharacterised– fauna, such as the huntsman spiders in the genus Cebrennus.
Previously known to occur from North Africa to the Middle East, new sightings of these spiders in Europe have drawn attention. Here, we use morphological and molecular data to describe a new species of Cebrennus from specimens collected in eastern Spain. Additionally, we use genetic data to place the new species, C. herculis sp. n., in a phylogenetic context and speculate on the biogeographic processes that lead to its presence in Europe.
Genetic distances among individuals of C. herculis sp. n. were low for the three molecular markers analysed (COI, 18S and 28S). Our phylogenetic tree recovered the monophyly of the Iberian Cebrennus, and placed them as sister to the only African representative with genetic data available, C. rungsi. Furthermore, divergence time analysis revealed a Palaeogene-Neogene split between the Iberian lineage and C. rungsi, compatible with an allopatric speciation following one of the ancient connections between Europe and Africa landmasses.
These findings show that habitats such as arid and semiarid areas still hide new and interesting diversity, underscoring the importance of preserving them.

Domènech, M., Calatayud-Mascarell, A., Pérez-Gómez, Á., Giacomelli, M., Iglesias Baquero, A., Mojica, M., Guerrero, J. J., Arnedo, M. A., & Lozano-Fernandez, J. (2025). Description of the first continental European species of the huntsman spider Cebrennus (Araneae, Sparassidae), confirming the presence of the genus in the region. Zoologischer Anzeiger. https://doi.org/10.1016/j.jcz.2025.08.005