Northernmost record and notes on the natural history of <i>Rheomys mexicanus</i> (Goodwin, 1959)

Caviedes-Solís, Itzue W.; Solano‐Zavaleta, Israel; Gómez-Jiménez, Yire A.; León‐Paniagua, Livia

doi:10.1894/0038-4909-62.1.92

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent literature on ichthyomyines includes a number of new locality records, in several cases providing noteworthy range extensions (e.g. Santillán and Segovia 2013, Rodríguez-Posada 2014, Medina et al 2015, Brito et al 2016, Caviedes-Solís et al 2017, Marín-C et al 2018. Also, new species have been described (Hanson et al 2015) or are awaiting description (N. Reid, pers.…”

Section: Introductionmentioning

confidence: 99%

A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)

et al. 2019

View full text Add to dashboard Cite

Based on two adult specimens collected in the Río León (Azuay, Ecuador), we describe a new highland species of a small crab-eating rat of the genus Ichthyomys Thomas (Rodentia, Cricetidae, Ichthyomyini). It is distinguishable from Ichthyomys hydrobates (Winge, 1891), the species phenetically closest to it, by its smaller size, bicolored tail (unicolored in I. hydrobates), broad and heavily fringed hindfoot (narrower and moderately fringed in I. hydrobates), and several craniodental traits (e.g. rostrum short broad; nasals anteriorly truncated; interorbital region narrow; supraorbital margins smoothly rounded; supraorbital foramina small, zygomatic plate very narrow; incisors opisthodont; length of M3 half that of M2). The new species occurs in the western Andes in southern Ecuador and is allopatric with Ichthyomys stolzmanni Thomas, 1893, which also has a bicolored tail but is larger. The new species brings the number of Ecuadorean Ichthyomys to four, Ecuador thus becoming the country with the greatest diversity of Ichthyomyini (four genera and eight species).

show abstract