Notes on Cybistrinae from Mexico (Coleoptera: Dytiscidae), with the description of 2 new species of Trifurcitus

A bibliographic and museum review is carried out on the Cybistrinae species of Mexico, as well as comparative analysis with species from South America, concluding that Trifurcitus fallax (Aubé, 1838) has been wrongly cited for Mexico. Additionally, 2 new species are described as the first country-specific records, Trifurcitus mexicanus sp. nov. from the state of Chiapas, and T. maya sp. nov. from the state of Yucatán. Also, new state records are provided for Bifurcitus lherminieri (Guérin-Méneville, 1829) in Mexico. Future reviews of specimens under the names Bifurcitus, Cybister, Metaxydytes, and Trifurcitus are recommended as this could likely uncover more new species.