Cicileus derradji sp. nov., a new species from southern Algeria (Scorpiones: Buthidae)

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  Cicileus derradji sp. nov., a new species from southern Algeria (Scorpiones: Buthidae) Abstract A new scorpion species, Cicileus derradji sp. nov., is described from Tin Zaouatine District, In Guezzam Province, southern Algeria. The description is based on an adult male holotype, an adult female paratype and a juvenile specimen, and is supported by detailed morphological analyses, including colouration, morphometrics, carination patterns and trichobothrial arrangement. This discovery extends the known distribution of the genus Cicileus approximately 500 km southwestward within Algeria. With the addition of this species, the number of recognised species in the genus increases to six. The new species is compared with all previously known species of Cicileus , and detailed colour photographs, including images taken under ultraviolet illumination, are provided. Derradj, L., Aydın Yağmur, E., Benali, N., & Bikada, M. (2026). Cicileus derradji sp. nov., a new species from south...

A new specimen of whip scorpion (Arachnida; Thelyphonida) from the Crato Formation, Lower Cretaceous of Brazil

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A new specimen of whip scorpion (Arachnida; Thelyphonida) from the Crato Formation, Lower Cretaceous of Brazil

Abstract

Fossil whip scorpions (Thelyphonida) are extremely rare in the Crato Formation strata, Araripe Basin, Lower Cretaceous (Aptian) of Brazil. Only four specimens of whip scorpions have been described in this unit so far. All specimens have been assigned to the genus Mesoproctus Dunlop and only one species has been formally proposed, M. rowlandi Dunlop. For Mesozoic times, apart from Crato Formation, whip scorpions are only documented by two species in the amber deposits of the Hukawng Valley, northern Myanmar. In this scenario, each new discovery of Mesozoic whip scorpion is highly important. In addition, we present the first documented example of book lungs from a fossil whip scorpion. Here, we present and illustrate a new specimen of whip scorpion found in the Crato strata. 

Alberto, G. de M., Bezerra, F. I., Giupponi, A. P. de L., & Mendes, M. (2023). A new specimen of whip scorpion (Arachnida; Thelyphonida) from the Crato Formation, Lower Cretaceous of Brazil. Revista Brasileira De Paleontologia, 26(3), 147–155. https://doi.org/10.4072/rbp.2023.3.01