Taxonomic analysis reveals four new Oecobius species in northwestern Mexico, indicating biodiversity.
Four new species of the genus Oecobius Lucas, 1846 (Araneae, Oecobiidae) from northwestern Mexico are described, all of them based on both sexes: O. culichi spec. nov. and O. yoreme spec. nov. from Sinaloa, O. yaqui spec. nov. from Sonora, and O. sudcaliforniana spec. nov. from Baja California Sur. In addition, we provide taxonomic remarks of two native species: O. hoffmannae Jiménez & Llinas, 2005 and O. isolatoides Shear, 1970.
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Alcántar-Valenzuela et al. (2025) studied this question.