Robust cottontail

Last updated

Robust cottontail
Sylvilagus robustus imported from iNaturalist photo 64270774 on 9 September 2021.jpg
S. h. robustus in Big Bend National Park
Status iucn3.1 VU.svg
Vulnerable  (IUCN 3.1) [1] (subspecies robustus only)
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Lagomorpha
Family: Leporidae
Genus: Sylvilagus
Species:
S. holzneri
Binomial name
Sylvilagus holzneri
(Mearns, 1896)
Subspecies
  • S. h. robustus(Bailey, 1905)
  • S. h. holzneri(Mearns, 1896)
  • S. h. hesperiusHoffmeister and Lee, 1963
Robust Cottontail area.png
Range of subspecies S. h. robustus
Synonyms

Sylvilagus cognatusNelson, 1907

The robust cottontail or Holzner's cottontail (Sylvilagus holzneri) is a species of cottontail rabbit native to high-altitude regions of the southwestern United States and western Mexico. [2]

Contents

Taxonomy

This species and the subspecies comprising it were long considered to be subspecies of the eastern cottontail (S. floridanus), but were promoted to species level due to morphological analysis. [3] [4] Genetic data have confirmed the uniqueness of S. holzneri. [5] S. holzneri and S. floridanus are distinguished primarily by size, dental, and cranial differences.

Subspecies

According to genetic analysis, there are three subspecies of S. holzneri: [3]

All three of these were previously considered subspecies of S. floridanus. One (robustus) was already resurrected as a distinct species in 1998, and was considered as such until being reclassified as a subspecies of the newly-resurrected holzneri in 2021, with the common name "robust cottontail" carrying over to holzneri. [2] [6]

"Manzano Mountain cottontail"

The Manzano Mountain cottontail (S. cognatus) was a species of Sylvilagus also previously classified in S. floridanus, until it was later reclassified as a distinct species. This species was thought to be restricted to the Manzano Mountains in New Mexico, where it occurs in coniferous forests in high elevation, and was classified as Endangered by the IUCN Red List. However, a 2021 phylogenetic analysis found S. cognatus to be indistinguishable from S. h. holzneri and synonymized it with holzneri. This classification was followed by the American Society of Mammalogists. [3] [2]

Description

S. holzneri typically averages a total length of 42 cm, and weighs between 1.3 and 1.8 kg. [7] It is restricted to dry, brushy, mountains at elevations above 1500 meters. [7]

Conservation

Despite the rarity of S. h. robustus, currently no governmental agency provides protection or listing for this subspecies. [1]

Related Research Articles

<span class="mw-page-title-main">Leporidae</span> Family of lagomorphs

Leporidae is the family of rabbits and hares, containing over 60 species of extant mammals in all. The Latin word Leporidae means "those that resemble lepus" (hare). Together with the pikas, the Leporidae constitute the mammalian order Lagomorpha. Leporidae differ from pikas in that they have short, furry tails and elongated ears and hind legs.

<span class="mw-page-title-main">Desert cottontail</span> Species of mammal

The desert cottontail, also known as Audubon's cottontail, is a New World cottontail rabbit, and a member of the family Leporidae. Unlike the European rabbit, they do not form social burrow systems, but compared with some other leporids, they are extremely tolerant of other individuals in their vicinity.

<span class="mw-page-title-main">Cottontail rabbit</span> Genus of mammals

Cottontail rabbits are the leporid species in the genus Sylvilagus, found in the Americas. Most Sylvilagus species have stub tails with white undersides that show when they retreat, giving them their characteristic name. However, this feature is not present in all cottontails nor is it unique to the genus.

<span class="mw-page-title-main">Eastern cottontail</span> Species of mammal

The eastern cottontail is a New World cottontail rabbit, a member of the family Leporidae. It is the most common rabbit species in North America.

<span class="mw-page-title-main">Common tapeti</span> Species of mammal

The commontapeti, also known as the Brazilian cottontail, forest cottontail, or (formerly) simply tapeti is a species of cottontail rabbit. It is small to medium-sized with a small, dark tail, short hind feet, and short ears. As traditionally defined, its range extends from southern Mexico to northern Argentina, but this includes several distinctive population that have since been split into separate species. Under this narrower definition, the true tapeti only occurs in the Atlantic Rainforest of coastal northeastern Brazil and it is classified as "Endangered" by the IUCN. The American Society of Mammalogists concurs, but also tentatively classifies several distinct populations that have not yet received proper species names into S. brasiliensis, and thus considers it to range from Venezuela south to Argentina.

<span class="mw-page-title-main">Omilteme cottontail</span> Species of mammal

The Omilteme cottontail is a cottontail rabbit found only in the state of Guerrero, Mexico in the mountain range of Sierra Madre del Sur. Belonging to the family Leporidae, it is one of fourteen species in the genus Sylvilagus, a genus restricted to the New World. The Omilteme cottontail is considered one of the most endangered rabbit species in the world and is only known and been described by very few specimens.

Cottontail may refer to:

<span class="mw-page-title-main">Mexican cottontail</span> Species of mammal

The Mexican cottontail is a species of cottontail rabbit in the family Leporidae. It is endemic to Mexico where its natural habitats are temperate forests, subtropical or tropical dry forests and pastureland.

<span class="mw-page-title-main">Dice's cottontail</span> Species of mammal

Dice's cottontail is a species of cottontail rabbit in the family Leporidae. It is found in Costa Rica and Panama, in páramo and cloud forest habitats.

<span class="mw-page-title-main">Tres Marias cottontail</span> Species of mammal

The Tres Marias cottontail or Tres Marias rabbit is a species of mammal in the family Leporidae.

<span class="mw-page-title-main">San José brush rabbit</span> Species of mammal

The San José brush rabbit is a critically endangered subspecies of the brush rabbit, in the family Leporidae.

<span class="mw-page-title-main">Mountain cottontail</span> Species of mammal

The mountain cottontail or Nuttall's cottontail is a species of mammal in the family Leporidae. It is found in Canada and the United States.

<span class="mw-page-title-main">Appalachian cottontail</span> Species of mammal

The Appalachian cottontail is a species of cottontail rabbit in the family Leporidae. It is a rare species found in the upland areas of the eastern United States.

The Suriname tapeti or Suriname lowland forest cottontail is a South American species of cottontail rabbit described in 2017. It is known from the lowlands of western Suriname, and was described from specimens collected by Dutch scientists in the 1980s. Its size is relatively large for a South American cottontail rabbit. The rabbit is likely already threatened due to environmental degradation in the region, and its discovery could boost conservation efforts in the area. It was discovered by Portland State University Professor Luis Ruedas.

The coastal tapeti, also known as the Rio de Janeiro dwarf cottontail or dwarf tapeti, is a species of cottontail rabbit native to Brazil. Known from only three specimens, captured in the late nineteenth century in the Paraíba Valley, it was for a long time considered to be a subspecies of the common tapeti. Slightly smaller than its close relative, analysis in 2017 confirmed that it is sufficiently distinct in both appearance and genetics to be considered a species in its own right. Due to destruction of its putative habitat in the densely populated Paraíba Valley, it is unclear whether or not the species still survives in the present day.

<span class="mw-page-title-main">Andean tapeti</span> Species of mammal

The Andean tapeti or Andean cottontail is a species of cottontail rabbit native to Colombia, Venezuela, Peru and Ecuador. It was previously considered a subspecies of the common tapeti. Living at high elevations in the treeless Páramo of the Andes, analysis in 2017 confirmed that it is sufficiently distinct in both appearance and genetics to be considered a species in its own right. Although widespread, it remains poorly known, as few studies have been conducted on its biology and habits as distinct from those of the tapeti

References

  1. 1 2 3 Ruedas, L. & Smith, A.T. (2020) [errata version of 2019 assessment]. "Sylvilagus robustus". IUCN Red List of Threatened Species . 2019: e.T41310A165116781.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. 1 2 3 "Explore the Database". www.mammaldiversity.org. Retrieved 2021-09-09.
  3. 1 2 3 Diersing, Victor E.; Wilson, Don E. (2021-06-17). "Systematics of the mountain-inhabiting cottontails (Sylvilagus) from southwestern United States and northern Mexico (Mammalia: Lagomorpha: Leporidae)". Proceedings of the Biological Society of Washington. 134 (1): 42–79. doi:10.2988/006-324X-134.1.42. ISSN   0006-324X. S2CID   236295647.
  4. Ruedas, Luis A. (1998). "Systematics of Sylvilagus Gray, 1867 (Lagomorpha: Leporidae) from Southwestern North America". Journal of Mammalogy. 79 (4): 1355–1378. doi: 10.2307/1383027 . JSTOR   1383027.
  5. Lee, DE; Pfau RS; Ammerman LK (2010). "Taxonomic status of the Davis Mountains Cottontail, Sylvilagus robustus, revealed by amplified fragment length polymorphism". Journal of Mammalogy. 91 (6): 1473–1483. doi: 10.1644/09-mamm-a-382.1 .
  6. Ruedas, Luis A. (1998-12-03). "Systematics of Sylvilagus Gray, 1867 (Lagomorpha: Leporidae) from Southwestern North America". Journal of Mammalogy. 79 (4): 1355–1378. doi: 10.2307/1383027 . ISSN   0022-2372. JSTOR   1383027.
  7. 1 2 The mammals of Texas: 2nd edition By David J. Schmidly, William B. Davis. 2004. pp. 466-467. University of Texas Press.