Revision of the Elusive Harvestmen Genus Discocyrtulus Roewer, 1927 (Opiliones: Laniatores: Gonyleptidae): Investigating the Presumed Northeastern Brazilian Discocyrtus-Like Relatives

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  Revision of the Elusive Harvestmen Genus Discocyrtulus Roewer, 1927 (Opiliones: Laniatores: Gonyleptidae): Investigating the Presumed Northeastern Brazilian Discocyrtus-Like Relatives ABSTRACT A maximum parsimony analysis based on morphological characters (23 taxa; 98 characters; 1951 scorings) was conducted to test the monophyly of Discocyrtulus Roewer, 1927, and to assess its phylogenetic relationships within Gonyleptidae. The results recover the species currently assigned to Discocyrtulus as phylogenetically distant from Pachylinae sensu stricto and nested instead within Discocyrtus sensu stricto +, forming a clade together with Discocyrtus moraesianus Mello-Leitão, 1923. Accordingly, Discocyrtulus is removed from Pachylinae Sørensen, 1884, and left without subfamilial assignment. As a result, Discocyrtulus now comprises Discocyrtulus crenulatus (Roewer, 1913) comb. nov. , Discocyrtulus marginalis Roewer, 1929, and Discocyrtulus moraesianus (Mello-Leitão, 1923) comb. ...

A New Whip Spider Species of the Genus Sarax Simon, 1892 (Amblypygi: Charontidae) from Thailand

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A New Whip Spider Species of the Genus Sarax Simon, 1892 (Amblypygi: Charontidae) from Thailand

Abstract

A new whip spider species of the genus Sarax Simon, 1892 is described based on three specimens collected in Koh Pha Ngan island, Southern Thailand. The new species, Sarax kosulici sp. nov., represents the second species of the genus Sarax described from Thailand, and the sixth species of Amblypygi reported from the country. The new taxon described here raises the total number of currently recognized species for the genus Sarax to 39.

Ythier, E. 2026. A New Whip Spider Species of the Genus Sarax Simon, 1892 (Amblypygi: Charontidae) from Thailand. Tropical Natural History. 26, 1 (Aug. 2026), 62–67. https://li01.tci-thaijo.org/index.php/tnh/article/view/269998