Andre Lira has co-workers have recently published an article describing two new species in the family Chactidae from the Northernmost Brazilian Amazon.
Brotheas cernii Lira, Gonzalez-Santillan, Santos-da-Silva, Brescovit & Pucca, 2026
Cayooca puchus Lira, Gonzalez-Santillan, Santos-da-Silva, Brescovit & Pucca, 2026
The genus Cayooca Gonzalez-Sponga, 1996 has been synonymized with Broteochactas Pocock, 1893. In the recent mega-revision of scorpion taxonomy, Prendini, 2026 resurrected this genus. As previously mentioned, I'm in the process of mapping all changed made in the Prendini paper and decide how to include these in The Scorpion Files. However, because a new species has been described in Cayooca, I have chosen to include this genus as valid in The Scorpion Files. A consequence of this is that Cayooca venezuelensis Gonzalez-Sponga, 1996 is returned to its original genus from Broteochactas Pocock, 1893.
Abstract:
Amid an ongoing environmental crisis marked by high deforestation rates in the Brazilian Amazon, two new species of chactid scorpions are herein described. Cayooca puchus sp. n. is described from an inselberg in the municipality of Mucajaí, state of Roraima, northern Brazilian Amazon. The new species resembles Cayooca venezuelensis but differs by denser body granulation and strongly costate, scattered granular ventromedian and ventral prosubmedian carinae. Brotheas cernii sp. n., described from the same locality, resembles Brotheas granulatus and B. subgranulatus but differs by smaller body size, granular ventral carinae on metasomal segment I, strongly granular pedipalp chelae, and spinoid granules on ventral metasomal carinae of segments III–V. These findings reinforce the Amazon as a major center of biodiversity and highlight the likelihood that numerous species remain undescribed.
Reference:
Lira AFA, González-Santillán E, Santos-da-Silva AP, Brescovit AD, Melo-dos-Santos G, Rocha AM, et al. Two New Species of Scorpions (Scorpiones: Chactidae) from Northernmost Brazilian Amazon. Diversity. 2026;18(6):345. [Open Access]
Thanks to Andre for sending me their article!
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