| Izvleček: | In Mexico there are few collections and institutions dedicated to the study of spiders. This has limited the knowledge about its biodiversity, because only nine states of 32 have documented its spider diversity. In Hidalgo state, the number of spider species is only known from two bibliographic compilations about the biodiversity of spiders in Mexico. Therefore, the present work aims to expand the knowledge of the spiders of this entity through an exhaustive bibliographic review and the revision of specimens deposited in the Arachnid Collection of the State of Mexico (CAEM) of the Sciences Faculty of the Autonomous University of the State of Mexico (UAEMex). One new record was found for Mexico (Anyphaena pacifica) and ten new records for Hidalgo State (Anyphaena cf. hespar, Eustala rosae, Habronattus oregonensis, Ixchela abernathyi, Mecaphesa decora, Oxyopes salticus, Paraphidippus aurantius, Phidippus carneus, Steatoda grossa and Theridion niveum). A checklist is provided consisting of 207 spider species, grouped into 101 genera and 33 families. The families with the highest number of genera and species were: Theridiidae, Araneidae, Lycosidae, Salticidae and Gnaphosidae. With the present work, Hidalgo went from the fifteenth to eighth place in terms of spider diversity in Mexico.
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