Ixodes

New record: Victoria: (1 F, LAFC 000484) Ejido Santa Ana, Heteromys irroratus Grey.

Distribution: Sierra Madre Oriental Province. Note: The type specimens of I. boliviensis were collected in Bolivia (Cochabamba Department) and described by Neumann (1904). Ixodes boliviensis was referred to in some Central and South American countries as Ixodes bicornis; however, Kohls (1956) synonymized Ixodes bicornis with I. boliviensis, while Camicas et al. (1998) considered I. boliviensis as a synonym of I. diversifossus. Based on the above, a comparison between the Mexican and Bolivian species should be made. The comparison should also include the types of Ixodes diversifossus Neumann, 1899 and Ixodes bicornis Neumann, 1906 (Guglielmone et al. 2023). Our specimen was determined as I. ca. boliviensis; however, this specimen presented some morphological variations (differences in the punctations on the scutum and shape of the spurs of coxa I) with respect to the diagnosis referred to in Guzmán-Cornejo and Robbins (2010). Furthermore, based on the comparison of a partial sequence of the 16 S rRNA gene obtained from this specimen, it was only 98 % similar to I. boliviensis (GenBank accession no. OP 47070.1 (Moreira-Soto et al. 2022).