Cryptotis lacandonensis Guevara 2014
Creators: name: Mittermeier, Russell A.
name: Wilson, Don E.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Soricomorpha
Soricidae
Cryptotis
Cryptotis lacandonensis

description: 97. Lacandona Small-eared Shrew <i>Cryptotis lacandonensis</i> <b>French:</b> Musaraigne de Lacandona / <b>German:</b> Lacandona-Kleinohrspitzmaus / <b>Spanish:</b> Musarana de orejas pequenas de Lacandona <b>Other common names:</b> Lacandona Shrew <b>Taxonomy.</b> Cryptotis lacandonensis Guevara et al., 2014, “ Yaxchilan Archaeological Site, 90-m elevation, municipality of Ocosingo, Chiapas, Mexico (... 16°54’N, 90°58'W).” L. Guevara and colleagues in 2014 determined that C. lacandonensis was sister to C. mayensis. Holotype and paratype were originally labeled C. griseoventris when they were collected in 1999 and 1998, respectively. This conclusion was also reached by A. B. Baird and colleagues in 2018; they concluded that C. lacandonensis was in the C. nigrescens group. Monotypic. <b>Distribution.</b> Lacandona Rainforest, Chiapas (SE Mexico); it might also be found in adjacent Guatemala or throughout the Usumacinta-Lacantin rivers plains. <b>Descriptive notes.</b> Head-body 78-81 mm, tail 33-35 mm, hindfoot 11-9 mm; weight 6 g. The Lacandona Small-eared Shrew is medium-sized. Dorsum is dark blackish gray, and venteris slightly paler blackish gray. Feet are small and slim, with tiny claws, and dusky in color. Tail is short (c.42-43% of head-body length), covered with short hair, and blackish. Eyes are diminutive, and ears are small and barley visible under fur. Skull is relatively large and long, with slender dentation (not bulbous); fourth unicuspid (U4) is aligned with tooth row and completely visible in labial view of rostrum; complex M?* has well-developed and pigmented protocone, paracrista, and conspicuous paracone; well-developed mesostyle, postcentrocrista, and metacone. Humerus is longer than what is typical for the Yucatan Small-eared Shrew (C. mayensis) and Merriam’s Small-eared Shrew (C. merriami). Teeth are reddish, and there are four unicuspids. <b>Habitat.</b> [Lowland tropical rainforests dominated by trees greater than 40 m in height on floodplains of the Lacantin-Usumacinta rivers at an elevation of ¢.90 m. <b>Food and Feeding.</b> No information. <b>Breeding.</b> No information. <b>Activity patterns.</b> No information. <b>Movements, Home range and Social organization.</b> No information. <b>Status and Conservation.</b> Not assessed on The IUCN Red List. The Lacandona Smalleared Shrew was only recently recognized as a distinct species and has a very restricted known distribution; it might be rare because it is known from only two specimens. Virtually nothing is known ofits natural history, and additional research is needed to understand its threats, taxonomy, and ecology. <b>Bibliography.</b> Baird et al. (2018), Guevara, Sanchez-Cordero et al. (2014), He Kai et al. (2015).
description: Published as part of <i>Russell A. Mittermeier &amp; Don E. Wilson, 2018, Soricidae, pp. 332-551 in Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos, Barcelona :Lynx Edicions</i> on page 430, DOI: 10.5281/zenodo.6870843