A New Species of Pocket Gopher (Genus Pappogeomys) From Jalisco, México

Deep in the volcanic peaks of the Sierra del Tigre, an isolated range straddling Jalisco and Michoacán, a handful of pocket gophers were trapped in the early 1950s. Collector J. R. Alcorn ventured into this rugged terrain, gathering specimens that had never before been examined by scientists. Their unexpected appearance sparked a careful investigation into a possible new member of the genus Pappogeomys.

The analysis revealed a medium‑sized gopher with a striking plumbeous‑to‑orange‑cinnamon coat, a short naked tail, and a suite of skull characteristics that set it apart from its closest relative, P. bulleri. Notable differences include a reduced enamel plate on a key tooth, a broader nasal patch, and uniquely shaped palatine openings. These traits, together with its confinement to the high elevations of the Sierra del Tigre, argue strongly for recognizing it as a distinct species.

Beyond the taxonomic details, the discovery highlights how even well‑studied groups can hide hidden diversity in remote habitats. Listeners will be drawn into the meticulous detective work of field naturalists and the subtle clues that differentiate one species from another, offering a glimpse into the living tapestry of Mexico’s mountain ecosystems.