List of erethizontids

Erethizontidae is a family of mammals in the order Rodentia and part of the Caviomorpha parvorder. Members of this family are called erethizontids or New World porcupines. They are found in North America, Central America, and South America, primarily in forests, though some species can be found in shrublands, grasslands, and savannas. They range in size from the Paraguaian hairy dwarf porcupine, at 24 cm (9 in) plus a 9 cm (4 in) tail, to the North American porcupine, at 130 cm (51 in) plus a 25 cm (10 in) tail. Erethizontids are herbivores and primarily eat leaves, stems, fruit, blossoms, and roots. No erethizontids have population estimates, and none are categorized as an endangered species or critically endangered.

The eighteen extant species of Erethizontidae are divided into two subfamilies: Chaetomyinae consists of a single species, the bristle-spined rat, and Erethizontinae contains seventeen species of porcupines in two genera. A few extinct prehistoric erethizontid species have been discovered, though due to ongoing research and discoveries, the exact number and categorization is not fixed.^[1]

The author citation for the species or genus is given after the scientific name; parentheses around the author citation indicate that this was not the original taxonomic placement. Conservation status codes listed follow the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. Range maps are provided wherever possible; if a range map is not available, a description of the erethizontid's range is provided. Ranges are based on the IUCN Red List for that species unless otherwise noted.

Erethizontidae is a family consisting of eighteen species in three genera, divided between two subfamilies. Chaetomyinae consists of a single species, and Erethizontinae contains seventeen species of porcupines in two genera.

• Family Erethizontidae
  • Subfamily Chaetomyinae
    • Genus Chaetomys (bristle-spined rat): one species
  • Subfamily Erethizontinae
    • Genus Coendou (prehensile-tailed porcupines): sixteen species
    • Genus Erethizon (North American porcupine): one species

The following classification is based on the taxonomy described by the reference work Mammal Species of the World (2005), with augmentation by generally accepted proposals made since using molecular phylogenetic analysis, as supported by both the IUCN and the American Society of Mammalogists.^[2]

Genus Chaetomys – Thomas, 1897 – one species

Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
Bristle-spined rat	C. subspinosus (Olfers, 1818)	Eastern Brazil	Size: 36–45 cm (14–18 in) long, plus 26–27 cm (10–11 in) tail[3] Habitat: Forest[4] Diet: Nuts[5]	VU  Unknown [4]

Genus Coendou – Lacépède, 1799 – sixteen species

Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
Andean porcupine	C. quichua Thomas, 1899	Panama and northeastern South America	Size: 33–44 cm (13–17 in) long, plus 26–41 cm (10–16 in) tail[6] Habitat: Forest[7] Diet: Leaves, stems, fruit, blossoms, and roots[8]	DD  Unknown [7]
Bahia porcupine	C. insidiosus (Olfers, 1818)	Eastern Brazil	Size: 29–35 cm (11–14 in) long, plus 18–22 cm (7–9 in) tail[3] Habitat: Forest[9] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [9]
Baturite porcupine	C. baturitensis Feijó & Langguth, 2013	Northeastern Brazil	Size: 46–55 cm (18–22 in) long, plus 32–47 cm (13–19 in) tail[3] Habitat: Forest[10] Diet: Leaves, stems, fruit, blossoms, and roots[8]	DD  Unknown [10]
Bicolored-spined porcupine	C. bicolor (Tschudi, 1844) Four subspecies C. b. bicolor C. b. quichua C. b. richardsoni C. b. simonsi	Western and northwestern South America	Size: 38–50 cm (15–20 in) long, plus 33–54 cm (13–21 in) tail[6] Habitat: Forest[11] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [11]
Black dwarf porcupine	C. nycthemera (Olfers, 1818)	Northern Brazil	Size: 29–38 cm (11–15 in) long, plus 28–37 cm (11–15 in) tail[6] Habitat: Forest[12] Diet: Leaves, stems, fruit, blossoms, and roots[8]	DD  Unknown [12]
Black-tailed hairy dwarf porcupine	C. melanurus (Wagner, 1842)	Northern South America	Size: 28–38 cm (11–15 in) long, plus 22–36 cm (9–14 in) tail[6] Habitat: Forest[13] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [13]
Brazilian porcupine	C. prehensilis (Linnaeus, 1758)	South America	Size: 29–48 cm (11–19 in) long, plus 31–43 cm (12–17 in) tail[3] Habitat: Forest[14] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [14]
Brown hairy dwarf porcupine	C. vestitus Thomas, 1899	Central Colombia	Size: 29–37 cm (11–15 in) long, plus 17–19 cm (7–7 in) tail[6] Habitat: Forest[15] Diet: Leaves, stems, fruit, blossoms, and roots[8]	DD  Unknown [15]
Dwarf porcupine	C. speratus Pontes, Gadelha, Melo, de Sá, Loss, Caldara Jr., Costa, & Leite, 2013	Eastern Brazil	Size: 33–44 cm (13–17 in) long, plus 29–32 cm (11–13 in) tail[6] Habitat: Forest[16] Diet: Leaves, stems, fruit, blossoms, and roots[8]	VU  Unknown [16]
Frosted hairy dwarf porcupine	C. pruinosus Thomas, 1905	Colombia and Venezuela	Size: 32–38 cm (13–15 in) long, plus about 19 cm (7 in) tail[6] Habitat: Forest[17] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [17]
Mexican hairy dwarf porcupine	C. mexicanus (Kerr, 1792)	Mexico and Central America	Size: 35–46 cm (14–18 in) long, plus 20–36 cm (8–14 in) tail[3] Habitat: Forest[18] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [18]
Paraguaian hairy dwarf porcupine	C. spinosus (Cuvier, 1822)	Southeastern South America	Size: 24–55 cm (9–22 in) long, plus 20–38 cm (8–15 in) tail[6] Habitat: Forest and savanna[19] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [19]
Roosmalen's dwarf porcupine	C. roosmalenorum Voss & da Silva, 2001	Western Brazil	Size: About 29 cm (11 in) long, plus about 26 cm (10 in) tail[6] Habitat: Forest[20] Diet: Leaves, stems, fruit, blossoms, and roots[8]	DD  Unknown [20]
Rothschild's porcupine	C. rothschildi Thomas, 1902	Panama	Size: 33–44 cm (13–17 in) long, plus 26–41 cm (10–16 in) tail[6] Habitat: Forest[7] Diet: Leaves, stems, fruit, blossoms, and roots[8]	NE  Unknown [7]
Streaked dwarf porcupine	C. ichillus Voss & da Silva, 2001	Eastern Ecuador	Size: 26–29 cm (10–11 in) long, plus 21–25 cm (8–10 in) tail[6] Habitat: Forest[21] Diet: Leaves, stems, fruit, blossoms, and roots[8]	DD  Unknown [21]
Stump-tailed porcupine	C. rufescens (J. E. Gray, 1865)	Northwestern and central South America	Size: 31–37 cm (12–15 in) long, plus 10–15 cm (4–6 in) tail[3] Habitat: Forest[22] Diet: Leaves, stems, fruit, blossoms, and roots[8]	LC  Unknown [22]

Genus Erethizon – F. Cuvier, 1823 – one species

Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
North American porcupine	E. dorsatum (Linnaeus, 1758) Seven subspecies E. d. bruneri E. d. couesi E. d. dorsata E. d. epixanthus E. d. myops E. d. nigrescens E. d. picinum	North America	Size: 60–130 cm (24–51 in) long, plus 16–25 cm (6–10 in) tail[3] Habitat: Forest, shrubland, and grassland[23] Diet: Buds, twigs, roots, stems, leaves, flowers, seeds, berries, nuts, and other vegetation[24]	LC  Unknown [23]