As stated in earlier posts, medical important scorpions are expanding their distribution in many parts of South America. Adolfo Borges and co-workers have recently reported the findings of the medical important species Tityus carrilloi Ojanguren-Affilastro, 2021 (Buthidae) in Paraguay. This species has previously only been known from Argentina where it has been involved in severe and fatal envenomations.
Abstract:
We report the first record of the medically important scorpion Tityus carrilloi in Paraguay, from the metropolitan area of Encarnac ´on, Itapúa Department, near the Argentine border. Known for causing severe and fatal envenomings across northern Argentina, the presence of this species in southeastern Paraguay highlights the risk of cross-border dispersion. Along with the regional spread of the Brazilian Tityus serrulatus, this finding has significant epidemiological implications and underscores the urgent need for improved surveillance, diagnostics, and coordinated public health responses in Paraguay and neighboring countries, within the evolving landscape of scorpionism in southern South America.
Reference:
Borges A, Caballero C, Rojas de Arias A, Smith P, Owen M, Nishi A, et al. First report of the medically significant Argentine scorpion Tityus carrilloi (Buthidae) in Paraguay: Epidemiological implications amid rising regional scorpionism. Toxicon. 2025;264:108456. [Subscription required for full text]
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