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...

Adding a piece to the scorpion distribution puzzle: expanding the records of Tityus (Tityus) confluens Borelli, 1899 (Scorpiones, Buthidae) in southern Brazil

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Adding a piece to the scorpion distribution puzzle: expanding the records of Tityus (Tityus) confluens Borelli, 1899 (Scorpiones, Buthidae) in southern Brazil

Summary

New records for the species Tityus (Tityus) confluens Borelli, 1899, previously known from the states of Ceará, Mato Grosso, Mato Grosso do Sul, Piauí and Tocantins in Brazil, are made for the state of Paraná. In addition, an updated map with these new records for Brazil is provided.

Margonari Goldoni, P., Iniesta, L. F., Marques-da-Silva, E., & Brescovit, A. (2025). Adding a piece to the scorpion distribution puzzle: expanding the records of Tityus (Tityus) confluens Borelli, 1899 (Scorpiones, Buthidae) in southern Brazil. Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais , 20 (1), 1-10. https://doi.org/10.46357/bcnaturais.v20i1.1018