Integrative systematics of Neotropical porcupines ofCoendou prehensiliscomplex (Rodentia: Erethizontidae)

Abstract

Coendou comprises the most speciose genus in Erethizontidae, with 15 currently recognized species. Although several taxonomic studies in the last two decades have unveiled part of its diversity, the most widespread Neotropical taxon Coendou prehensilis has received limited attention. Here, we combined morphological and molecular datasets to infer the phylogenetic relationships of the species in the genus and revise the taxonomy of the C. prehensilis complex. We found four morphotypes and three well-supported monophyletic clades within C. prehensilis. These three clades represent valid species: C. prehensilis (restricted to the north of the Atlantic Forest), C. baturitensis (occurring in the eastern Amazonian and montane forests enclaves in the Caatinga), and C. longicaudatus (two subspecies, C. l. longicaudatus from the Amazon and C. l. boliviensis from Cerrado and Chaco). Furthermore, we recovered three morphologically diagnosable clades within Coendou, for which we assigned subgeneric names. Coendou (Coendou) comprises six species (C. baturitensis, C. longicaudatus, C. mexicanus, C. prehensilis, C. quichua, and C. rufescens), Coendou (Sphiggurus) includes five taxa (C. bicolor, C. insidiosus, C. nycthemera, C. speratus, and C. spinosus), and the third subgenus we named Coendou (Caaporamys) subgen. nov, comprising C. melanurus (type species), C. vestitus, C. pruinosus, C. ichillus, and C. roosmalenorum.

First record of albinism in Coendou (Coendou) longicaudatus Daudin, 1802 (Rodentia, Erethizontidae) in the state of Rondônia, Brazil

“…The Amazonian long-tailed porcupine Coendou (Coendou) longicaudatus Daudin, 1802 is a large arboreal Neotropical rodent that is widely distributed in the Amazon, east of the Andes, although its range is currently limited to the left bank of the Xingu River, being the only species of the genus occurring in the study area (Menezes et al 2021). From the dorsal view, it is characterized by a dark brown coloration, streaked with short white dashes (Menezes et al 2021).…”

“…The Amazonian long-tailed porcupine Coendou (Coendou) longicaudatus Daudin, 1802 is a large arboreal Neotropical rodent that is widely distributed in the Amazon, east of the Andes, although its range is currently limited to the left bank of the Xingu River, being the only species of the genus occurring in the study area (Menezes et al 2021). From the dorsal view, it is characterized by a dark brown coloration, streaked with short white dashes (Menezes et al 2021). With respect to predation, there are occasional records of this porcupine being preyed upon by the ocelot Leopardus pardalis (Arias-Alzate et al 2017;Griffiths et al 2020) The individual in question was observed in the vicinity of the Samuel Hydroelectric Plant lake, near to the Samuel Ecological Station (latitude 9.060749; longitude 63.290839) at around 09:35 on July 9, 2021 (Figs.…”

“…The order Rodentia encompasses the widest diversity of living mammals (Wilson & Reeder 2005), with new species continuously being described or identified (e.g., Menezes et al 2021;Teta et al 2022). In Brazil, 770 mammal species have been formally recorded to date, among which 34.68% are rodent species (Abreu et al 2021).…”