472.

Lagiglia’s Marsh Rat

Holochilus lagigliai

French: Oryzomys de Lagiglia / German: Lagiglia-Sumpfratte / Spanish: Rata de marisma de Lagiglia

Taxonomy. Holochilus lagiglia Pardinas et al, 2013, Embalse El Nihuil, San Rafael, Mendoza, Argentina .

This species is monotypic.

Distribution. Known only from the type locality in Argentina .

Descriptive notes. Tail 136-5 mm, hindfoot 45-8 mm (only measurements available from the holotype). See general characters of the genus under the Venezuelan Marsh Rat ( H. venezuelae) account. Dorsum of Lagiglia’s Marsh Rat is reddish brown; venter is whitish; and throat, chest, and inguinal regions are completely white. Mystacial vibrissae are short and do not reach eartips. Tail is bicolored, scarcely haired, and short compared with other species of Holochilus . Hindfeet have interdigital webbing. Skull is heavily built. Interorbital margins with moderately well-developed supraorbital crests. Incisors are opisthodont; molars are tetralophodont.

Habitat. Semiarid region modified by agricultural activities, restricted to the Atuel fluvial system.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. Lagiglia’s Marsh Rat has an amphibiouslifestyle, although its shortertail, compared with other species of Holochilus of similarly size, may influence its ability to swim.

Movements, Home range and Social organization. No information.

Status and Conservation. Not assessed on The IUCN Red List. Efforts to find extant populations of Lagiglia’s Marsh Rat suggest that it is rare or could be extinct. Late Holocene records suggest a larger distribution in a recent past.

Bibliography. Fernandez et al. (2017), Goncalves et al. (2015), Pardinas et al. (2013).