First record of Thaumasia Perty, 1833 nursery web spider (Araneae: Pisauridae) preying upon Polistes canadensis (Linnaeus, 1758) (Hymenoptera: Vespidae) in the Neotropical region

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  First record of Thaumasia Perty, 1833 nursery web spider (Araneae: Pisauridae) preying upon Polistes canadensis (Linnaeus, 1758) (Hymenoptera: Vespidae) in the Neotropical region Abstract Thaumasia Perty, 1833 are opportunistic spiders that inhabit the Neotropical region. This study reports a spider of the genus Thaumasia preying upon Polistes canadensis (Linnaeus, 1758) in semiarid region of Brazil. A spider of the genus Thaumasia was observed moving rapidly from the fountain's water surface to capture an individual of P. canadensis . After successfully capturing the wasp, Thaumasia sp. was observed partially perched on the wall of the fountain, with the prey still on the water surface and trapped by its chelicerae. The pedipalps and chelicerae of Thaumasia sp. manipulated the head of P. canadensis , which stopped moving shortly after being captured, probably because of the action of the spider's venom. The study records a wasp in the diet of Thaumasia based on the ca...

New considerations about the outstanding variability of the genus Chaerilobuthus Lourenço & Beigel, 2011 (Scorpiones: Chaerilobuthidae) and the description of one more new species from Early Cretaceous Burmite

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New considerations about the outstanding variability of the genus Chaerilobuthus Lourenço & Beigel, 2011 (Scorpiones: Chaerilobuthidae) and the description of one more new species from Early Cretaceous Burmite

Abstract. – One more new species of fossil scorpion belonging to the genus Chaerilobuthus Lourenço & Beigel, 2011 is described from Early Cretaceous Burmite. Chaerilobuthus muelleri Lourenço sp. n., represents the 15th species to be described for this genus confirming therefore the strong speciose characteristic of this group. The new species shows several clear morphological differences when compared to the previous known species, attesting the existence of a major variability within Chaerilobuthus. A list of the known species is presented, as well a number of comments on the variability of different morphological characters.

Lourenço W. R. & Velten J., 2026. – Nouvelles considérations sur la remarquable variabilité du genre Chaerilobuthus Lourenço & Beigel, 2011 (Scorpiones : Chaerilobuthidae) et description d’une nouvelle espèce de l’ambre du Crétacé inférieur de Myanmar. Faunitaxys, 14(11): 1 – 6. https://doi.org/10.57800/faunitaxys-14(11)