It is a known climbing rat from such a small area in the Chiapas Mountains that has not been confirmed for a single record since decades, despite some later search efforts. Like the rest of climbing rats of its kind, it has a long and prensil tail that it uses as an additional support point when moving between the dense vegetation of the forest, a feature shared with other Mesoamerican tree rodents. It lived in the mountain wet forest of a very concrete massive of southeast Mexico, a habitat that has suffered a considerable transformation since the last known specimens were safely harvested. Its situation, halfway between confirmed extinction and the simple lack of successful searches, makes it another of many cases of Mexican mammal whose actual state remains an unknown.
A medium-sized rodent, slender body adapted to climbing, gray brown coat, and long tail with prensil capacity that exceeds the length of the body. It is confused with other species of the same genus of climbing rats of the Chiapas Mountains, whose reliable separation requires genetic or cranial analysis; the almost total absence of recent reference specimens complicates any confirmed field identification.
Fingerprint with 4 front fingers and 5 rear fingers, 2.5-3 cm rear, no recent field records that document this trace with certainty. extended feces, 1-1.2 cm, presumably left scattered by the dense vegetation of the sotobosque, like the rest of climbing rats of its kind, although there are no confirmed observations in the last decades.
Mountainous wet forest, with dense sotobosque, generally between 1000 and 2000 m of altitude. Historically known from a reduced area of the mountains of Chiapas, southeast of Mexico, without recent confirmed records.
Omnivorous, it was presumably fed with fruit, seed, leaf and invertebrates from the subbosque, like the rest of the species of its genre, although there are no direct confirmed data.
Arboricals and climbers, like the rest of their genre, with a completely unknown behavior given the almost total absence of field records from their description.
No recent record of the species has been confirmed for decades, despite some search efforts, suggesting an extremely reduced population or, possibly, extinction of the species.
Deforestation and transformation of mountain wetlands by agricultural and livestock expansion in the Chiapas Mountains, the most likely threat given the period in which specimens ceased to be registered.
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