New and noteworthy records of rodents (Mammalia, Rodentia, Cricetidae and Echimyidae) from Paraguay

Abstract

Paraguay, situated in south-central South America, lies at the nexus of several major biomes, and exhibits high species richness for a relatively small country. Nevertheless, that faunal diversity is poorly known, and new species for the country continue to come to light. This paper reports on 3 species of rodents, 1 new for the country and 2 known previously in Paraguay from 1 specimen. We emphasize the need for more and better training of new field and museum biologists, as well as for directors of permitting agencies and protected areas.

Predictive sampling effort and species-area relationship models for estimating richness in fragmented landscapes

“…Furthermore, new species records are validating our models, for example, Juliomys pictipes , a particularly rare Atlantic Forest species, was first documented in Paraguay 2009 [92] and more records are being added [70]. More recently Atlantic Forest endemics Delomys dorsalis and Abrawayaomys ruchii have been recently discovered in the country [93, 94, 95]. It is very likely that new species will be found in these larger forest remnants with continued field expeditions [6] and improved taxonomic and collections studies [95].…”

An annotated checklist of the mammals of Paraguay

“…The 151 species reported by Myers et al (2002); sent to publication in 1997) increased to 167 in the list by Neris (1998), and to 181 in this account, an increase of 19.9 % from Myers et al (2002) in less than 20 years. Species have been added due to new findings in the field, review of museum material, taxonomic revisions, and phylogenetic analyses (e. g., López-González et al 1998;Willig et al 2000;Voss et al 2005López-González 2005;Weksler and Bonvincino 2005;de la Sancha et al 2007;D'Elía et al 2008aD'Elía et al , 2008bPercequillo et al 2008;de la Sancha et al 2009;Stevens et al 2010;de la Sancha et al 2011;Bornholdt et al 2013;González-Ittig et al 2014;Moratelli and Wilson 2013;Owen et al 2014;de la Sancha and D'Elía 2015;Moratelli et al 2015;Timm et al 2015;Pardiñas et al 2016). The number of nomenclatural and taxonomic changes observed reflects an improving understanding of the diversity and phylogenetic relationships of the South American mammalian fauna in general, and the Paraguayan assemblage in particular.…”

First record of Brazilian Porcupine, Coendou prehensilis (Linnaeus, 1758) (Rodentia, Erethizontidae), from the Humid Chaco of Paraguay

“…Several mammalian species are known in Paraguay from very few specimens. In particular, caviomorph rodents tend to be poorly represented, both in Paraguay (Owen et al 2018) and regionally (Pardiñas et al 2021a). Most caviomorph rodents are often overlooked because they are neither small enough to enter common rodent traps nor large enough to be "charismatic" species, and members of Erethizontidae exemplify this paucity of information (D'Elía et al 2008).…”

“…Most caviomorph rodents are often overlooked because they are neither small enough to enter common rodent traps nor large enough to be "charismatic" species, and members of Erethizontidae exemplify this paucity of information (D'Elía et al 2008). Thus, detailed current information on the distribution and ecology of South American caviomorph rodents is generally scarce, and porcupines in particular (Owen et al 2018;Ramírez-Chaves 2020;Pardiñas et al 2021a).…”