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...

Expanding the taxonomy of crab spiders (Araneae, Thomisidae) in Sumatra: a new genus, five new species, and regional records

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Expanding the taxonomy of crab spiders (Araneae, Thomisidae) in Sumatra: a new genus, five new species, and regional records

Abstract

The taxonomy of crab spiders (Thomisidae) has been the focus of many reviews, adding new genera such as Ibana and Crockeria while synonymising Ascurisoma with Cebrenninus, and describing many new species. A collection of crab spiders from Jambi Province (Sumatra, Indonesia) revealed further diversity, resulting in the description of a new genus, Rangkayo Dhiya’ulhaq & Benjamin, gen. nov., and five new species: Crockeria neofelis Dhiya’ulhaq & Benjamin, sp. nov. (♂♀), Ibana svarnadvipa Dhiya’ulhaq & Benjamin, sp. nov. (♂♀), Pharta roseomaculata Dhiya’ulhaq & Benjamin, sp. nov. (♀), Rangkayo hitam Dhiya’ulhaq & Benjamin, sp. nov. (♂♀), and Rangkayo perkaso Dhiya’ulhaq & Benjamin, sp. nov. (♂♀). Additionally, new records of Angaeus christae Benjamin, 2013 (♂), Angaeus verrucosus Benjamin, 2017 (♂), Crockeria kinabalu Benjamin, 2016 (♂), Epidius elongatus Benjamin, 2017 (♂), and Pharta bimaculata Thorell, 1891 (♂♀) are provided for Sumatra, as well as high-resolution images of Cebrenninus magnus Benjamin, 2016 (♂) and Cebrenninus rugosus Simon, 1887 (♀). The present study highlights the considerable biodiversity of tropical crab spiders and underscores the importance of continued taxonomic and ecological research in Southeast Asia in general, and the Indonesian archipelago in particular.

Dhiya'ulhaq NU, Benjamin SP, Buchori D, Hidayat P, Scheu S, Drescher J (2025) Expanding the taxonomy of crab spiders (Araneae, Thomisidae) in Sumatra: a new genus, five new species, and regional records. ZooKeys 1241: 205-246. https://doi.org/10.3897/zookeys.1241.148348