New insights into maternal care and juvenile dispersal in Pterinopelma roseum (Araneae: Theraphosidae)

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  New insights into maternal care and juvenile dispersal in Pterinopelma roseum (Araneae: Theraphosidae) Abstract Tarantulas (Theraphosidae) exhibit a wide diversity of reproductive behaviors, yet many aspects of their natural history, particularly those related to maternal care and juvenile dispersal, remain poorly known. Pterinopelma roseum is a species distributed in southern Brazil and northeastern Argentina for which information on reproductive biology is limited. The aim of this study was to document maternal care, egg sac composition, and juvenile dispersal through the monitoring of a female collected together with its egg sac in Misiones Province, Argentina. The female was maintained under controlled laboratory conditions and observed daily until juvenile dispersal. During the incubation period, the female actively protected the egg sac, remaining in contact with it most of the time and displaying defensive behaviors when disturbed, while continuing to feed regularly. The e...

A new African species of the genus Leiurus Ehrenberg, 1828 from Mali (Scorpiones: Buthidae)

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A new African species of the genus Leiurus Ehrenberg, 1828 from Mali (Scorpiones: Buthidae)

Abstract


A new species of Leiurus Ehrenberg, 1828 is described on the basis of one male specimen collected in the mountain system of Adrar des Iforas, Cercle of Kidal, in Mali. The new species, Leiurus tamajeq sp. n. is most certainly associated to Leiurus hoggarensis, described from the Hoggar mountain system in Algeria, both species presenting an almost parapatric geographic distribution. Nevertheless, these closed related mountain systems have been isolated during past palaeoclimatic vicissitudes leading to possible differentiation processes. The two species can be distinguished by a number of morphological characters which clearly suggest that the new species population is distinct from the one found in the Hoggar mountain system. Differences are noticeable notably for morphometric values as well as the relative position of several trichobothria. As for L. hoggarensis, the new species seems to inhabit a more mesic zone when compared to the central compartment of the Saharan desert and, apparently, do not present characteristics of a psamophilic species and may be considered as a lithophilic species.


Lourenço, Wilson & Ythier, Eric. (2024). A new African species of the genus Leiurus Ehrenberg, 1828 from Mali (Scorpiones: Buthidae). SERKET The Arachnological Bulletin of the Middle East and North Africa.