Sex Role–Dependent Behavioral and Architectural Divergence in a Jumping Spider

  Sex Role–Dependent Behavioral and Architectural Divergence in a Jumping Spider ABSTRACT Sex differences in behavior and functional traits are often attributed to differences in mating effort intensity, but the role of sex-specific parental demands remains poorly understood. Using the jumping spider Toxeus maxillosus —where males engage in mate searching and courtship without providing parental care, while females provide extended maternal care from egg attendance to offspring maturity (around 3 months)—we conducted an exploratory investigation into whether these distinct selective pressures led to divergence in spatial behaviors and nest architecture. Results revealed that males and females showed equivalent accuracy, latency, and learning-related performance in both a route-planning test under water stress and a color-pattern associative memory task. In contrast, during nest-construction assays, females built complex, multi-entrance structures that closely matched the container'...

Revision of the genus Scorpio in Jordan, with a description of a new genus and three new species (Scorpiones: Scorpionidae)

 


Revision of the genus Scorpio in Jordan, with a description of a new genus and three new species (Scorpiones: Scorpionidae)

Abstract

Several new Scorpio populations are studied from various habitats in Jordan, including specimens previously identified as Scorpio kruglovi Birula, 1910 and S. fuscus (Ehrenberg, 1829). A new scorpionid genus, Jordanius gen. n. is described, mainly differentiated from the genus Scorpio Linné, 1758 by the elongation and heavy patterns of granulation of chela manus, and granulated chela fingers. Scorpio granulomanus Al-Saraireh et al., 2023 is transferred to the new genus, and Jordanius maysaraensis gen. et sp. n. is described. Also, Scorpio jordanensis sp. n. and S. wahbehi sp. n. are described. Detailed redescriptions and illustrations of S. palmatus (Ehrenberg, 1828) and S. fuscus (Ehrenberg, 1829) are given. A neotype of S. palmatus from Alexandria, Egypt and a neotype of S. fuscus from Lebanon are designated. A key to the family Scorpionidae in Jordan and comments on dubious or incorrect records from Jordan are provided. Lastly, S. propinquus is suggested as nomen dubium.


Abu Afifeh, B., Yağmur, E. A., Al–Saraireh, M., & Amr, Z. 2024 . Revision of the genus Scorpio in Jordan, with a description of a new genus and three new species (Scorpiones: Scorpionidae). Euscorpius, No. 391: 1-66. 

https://mds.marshall.edu/euscorpius/vol2024/iss391/1/