New species of the Spiny Mouse genus Neacomys (Cricetidae, Sigmodontinae) from northwestern Ecuador

Article Biochemical Research Methods

MorphoTools2: an R package for multivariate morphometric analysis

Marek Slenker et al.

Summary: The MorphoTools2 package is a comprehensive tool for multivariate analyses of morphological data. It wraps available statistical and graphical tools to provide a convenient workflow and visualize results.

BIOINFORMATICS (2022)

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Article Zoology

A new species of Andean mouse of the genus Thomasomys (Cricetidae, Sigmodontinae) from the eastern Andes of Ecuador

Thomas E. Lee et al.

Summary: A new species of Andean mouse is described in this study, which is a large-bodied rodent inhabiting the eastern slope of the Andes in central Ecuador. Based on molecular analysis, this species belongs to the aureus group and is closely related to an undescribed species from northern Ecuador. This finding not only increases the diversity of Thomasomys to 48 species, but also represents the largest species of the genus described in Ecuador.

VERTEBRATE ZOOLOGY (2022)

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Article Multidisciplinary Sciences

Unlocking Andean sigmodontine diversity: five new species of Chilomys (Rodentia: Cricetidae) from the montane forests of Ecuador

Jorge Brito et al.

Summary: The Andean cloud forests in Ecuador are home to many unique mammals, and the Thomasomyini rodents, with Thomasomys being the largest genus, are well represented in the Andes. However, there are still genera within this group that have not been taxonomically revised, and Chilomys Thomas, 1897, is an example of these overlooked Andean cricetids. After years of field work in Ecuador, a large number of Chilomys specimens were collected, indicating that what is currently considered C. instans in Ecuador is actually a complex comprising of at least five new species. This discovery suggests that Chilomys likely has additional hidden diversity in other parts of Colombia and Peru, and calls for a revision of the entire genus.

PEERJ (2022)

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Article Biodiversity Conservation

Diversity of small non-volant mammals of Lita, northwestern Imbabura, Ecuador

Jenny Curay et al.

Summary: Our survey in Lita, Ecuador revealed a high density and diversity of non-volant mammals, particularly rodents.

CHECK LIST (2022)

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Article Biodiversity Conservation

Diversity of small non-volant mammals of Lita, northwestern Imbabura, Ecuador

Jenny Curay et al.

Summary: This study conducted surveys on small non-volant mammals in Lita, Ecuador, revealing 23 species with a total of 180 individuals, with rodents being the most diverse group. The results suggest that Lita is a natural area with a high concentration of non-volant mammals in the northwestern Ecuadorian subtropics.

CHECK LIST (2022)

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Article Zoology

Calling for a reassessment of rodent diversity in Colombia: description of a new species of Neacomys (Cricetidae: Oryzomyini) from the Magdalena Valley, with a new phylogenetic hypothesis for the genus and comments on its diversification

Javier E. Colmenares-Pinzon

Summary: Neacomys, a genus of oryzomyine rodents, has seen an increase in species descriptions in recent decades, with most studies focusing on populations east of the Andes. A new species of Neacomys has been discovered in Colombia, showcasing unique morphological and molecular characteristics. This finding suggests that the western region of the Andes may hold hidden diversity for the genus, emphasizing the need for further exploration and conservation efforts.

ZOOTAXA (2021)

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Article Biodiversity Conservation

Three new species of spiny mice, genus Neacomys Thomas, 1900 (Rodentia: Cricetidae), from Brazilian Amazonia

Thiago Borges Fernandes Semedo et al.

Summary: Spiny mice of the genus Neacomys are small rodents found in forested habitats from Panama to central Bolivia. Recent systematic revisions have increased the number of recognized species from 4 to 20, with 3 new species described in this study. These new species are found in western and central Brazilian Amazonia, delimited by major rivers and corresponding to previously described Amazonian centers of endemism.

SYSTEMATICS AND BIODIVERSITY (2021)

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Article Zoology

A new species of the genus Oligoryzomys (Rodentia: Cricetidae) from Peru

Natali Hurtado

Summary: In this study, qualitative and quantitative morphological analyses were conducted on three lineages of the genus Oligoryzomys, leading to the recognition of O. aff. andinus as a new species. Two hypotheses on the biogeographical history of O. andinus, O. arenalis, and the newly described species were proposed.

JOURNAL OF MAMMALOGY (2021)

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Article Zoology

Discovery of the first Amazonian Thomasomys (Rodentia, Cricetidae, Sigmodontinae): a new species from the remote Cordilleras del Condor and Kutuku in Ecuador

Jorge Brito et al.

Summary: A new species of the cricetid rodent genus Thomasomys has been discovered in the montane forests of southeastern Ecuador, characterized by a large body size and unique features compared to its congeners. It belongs to the aureus group and increases the diversity of Thomasomys to 46 species, with 17 species found in Ecuador. This species is also the first Thomasomys discovered in the Amazon basin, expanding the known range of a genus previously thought to be restricted to the Andean ranges.

JOURNAL OF MAMMALOGY (2021)

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Article Zoology

Systematics of the rodent genus Neacomys Thomas (Cricetidae: Sigmodontinae): two new species and a discussion on carotid patterns

Aldo Caccavo et al.

Summary: The taxonomy of the Neacomys genus is currently undergoing changes, with an increase in species diversity and discovery of new phylogenetic lineages. The study focuses on two new candidate species in Venezuela and Brazil, with unique carotid circulation patterns, and emphasizes the importance of morphological and morphometric analysis in species identification. Further research on these new species will contribute to understanding the biogeographic patterns and evolutionary trends within this diverse genus.

JOURNAL OF MAMMALOGY (2021)

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Article Zoology