Bidentate yellow-eared bat

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Bidentate yellow-eared bat
Vampyriscus bidens 438610107.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Phyllostomidae
Genus: Vampyriscus
Species:
V. bidens
Binomial name
Vampyriscus bidens
Dobson, 1878
Vampyriscus bidens map.svg
Synonyms

Vampyressa bidens

The bidentate yellow-eared bat (Vampyriscus bidens) is a species of bat in the family Phyllostomidae, native to South America. Formerly classified in the Vampyressa genus, phylogenetic analyses support its inclusion in Vampyriscus . [2] [3]

Contents

Description

Small in size, it measures only 5 to 6 cm (2.0 to 2.4 in) in head-body length, and weighs approximately 12 g (0.42 oz). Males are larger than females. The fur is pale to dark brown over most of the body, becoming slightly paler on the neck and shoulders, and fading to greyish on the underparts. There are white stripes on each side of the face; a broader one above the eyes, and a narrower, less distinct one, running along the cheek. The borders and tragus of the ears, and also the margins of the nose-leaf, are bright yellow. [4]

The bat has a short, broad, muzzle, with a prominent, spear-like, nose-leaf. The "bidentate" part of the name refers to the fact that there are normally only a single pair of incisors in the lower jaw, whereas all other yellow-eared bats have two pairs. However, this is not true of all individuals, some of which do have two pairs of lower incisors like their relatives. [5]

Distribution and habitat

The bidentate yellow-eared bat is distributed throughout much of northern South America east of the Andes, including eastern Colombia, Ecuador, and Peru, southern Venezuela, northern Bolivia and Brazil, and throughout the Guyanas. [1] It lives in lowland evergreen forests and swampland between 200 and 1,000 m (660 and 3,280 ft) elevation. [4]

Biology

The bidentate yellow-eared bat is herbivorous, feeding on fruit such as figs. [4] It is nocturnal, but flies more often at dusk than before dawn, [6] and during the day it roosts in trees. Young are born in the rainy season. [7]

Related Research Articles

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Vespertilionidae is a family of microbats, of the order Chiroptera, flying, insect-eating mammals variously described as the common, vesper, or simple nosed bats. The vespertilionid family is the most diverse and widely distributed of bat families, specialised in many forms to occupy a range of habitats and ecological circumstances, and it is frequently observed or the subject of research. The facial features of the species are often simple, as they mainly rely on vocally emitted echolocation. The tails of the species are enclosed by the lower flight membranes between the legs. Over 300 species are distributed all over the world, on every continent except Antarctica. It owes its name to the genus Vespertilio, which takes its name from a word for bat, vespertilio, derived from the Latin term vesper meaning 'evening'; they are termed "evening bats" and were once referred to as "evening birds".

<span class="mw-page-title-main">Leaf-nosed bat</span> Family of bats

The New World leaf-nosed bats (Phyllostomidae) are bats found from southern North America to South America, specifically from the Southwest United States to northern Argentina. They are ecologically the most varied and diverse family within the order Chiroptera. Most species are insectivorous, but the phyllostomid bats include within their number true predatory species and frugivores. For example, the spectral bat, the largest bat in the Americas, eats vertebrate prey, including small, dove-sized birds. Members of this family have evolved to use food groups such as fruit, nectar, pollen, insects, frogs, other bats, and small vertebrates, and in the case of the vampire bats, even blood.

<span class="mw-page-title-main">Spectral bat</span> Species of bat

The spectral bat, also called the great false vampire bat, great spectral bat, American false vampire bat or Linnaeus's false vampire bat, is a large, carnivorous leaf-nosed bat found in Mexico, Central America, and South America. It is the only member of the genus Vampyrum; its closest living relative is the big-eared woolly bat. It is the largest bat species in the New World, as well as the largest carnivorous bat: its wingspan is 0.7–1.0 m (2.3–3.3 ft). It has a robust skull and teeth, with which it delivers a powerful bite to kill its prey. Birds are frequent prey items, though it may also consume rodents, insects, and other bats.

<span class="mw-page-title-main">Big-eared woolly bat</span> Species of mammals belonging to the New World leaf-nosed bat family

The big-eared woolly bat or (Peters's) woolly false vampire bat is a species of bat, belonging to the family Phyllostomidae.

<span class="mw-page-title-main">Honduran white bat</span> Species of bat that constructs tents

The Honduran white bat, also called the Caribbean white tent-making bat, is a species of bat in the family Phyllostomatidae. It is the only member of the genus Ectophylla. The genus and the species were both scientifically described for the first time in 1892. It has distinctive, entirely white fur, which is only found in six of the roughly 1,300 known species of bat. It constructs "tents" out of understory plant leaves by strategically cutting the leaf ribs with its teeth; it roosts in these tents during the day. It is a specialist frugivore, consuming almost exclusively the fruits of one species of fig. Females can likely become pregnant twice per year, giving birth to one offspring at a time.

<span class="mw-page-title-main">Gnome fruit-eating bat</span> Species of bat

The gnome fruit-eating bat is a bat species found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela. This species was originally determined to be different from the other known species of fruit bats, but later, in 1994 was mistakenly grouped under Artibeus cinereus as a synonym. However, this has since been corrected by more closely studying their physical differences and by biomolecular analysis.

<span class="mw-page-title-main">Little big-eared bat</span> Species of bat

The little big-eared bat is a bat species in the order Chiroptera and family Phyllostomidae. It is from South and Central America particularly Colombia, Venezuela, Guyana, French Guiana, Brazil, Peru, Ecuador, Bolivia, Argentina, Paraguay, Suriname and Trinidad. Though its exact population is unknown, it is considered widespread and occurs in protected areas, although deforestation may be a minor threat, it is classified as Least Concern. It is found in multistratal evergreen forests and dry thorn forests and forages near streams and is found hollow trees, logs, caverns, or houses with groups up to twelve. The head and body length measures at 44 millimetres (1.7 in) for males and 45 millimetres (1.8 in) for females. Males usually weigh about 5 grams (0.18 oz) while females weigh 5.7 grams (0.20 oz).

<span class="mw-page-title-main">Brock's yellow-eared bat</span> Species of bat

Brock's yellow-eared bat is a species of bat in the family Phyllostomidae, the leaf-nosed bats. It is native to Brazil, Colombia, Guyana, Suriname, French Guiana, and Peru.

<i>Micronycteris</i> Genus of bats

Micronycteris is a genus of leaf-nosed bats.

<span class="mw-page-title-main">Bidentate yellow-shouldered bat</span> Species of bat

The bidentate yellow-shouldered bat is a species of bat in the family Phyllostomidae. It is found in South America.

<span class="mw-page-title-main">Lesser yellow-shouldered bat</span> Species of bat

The lesser yellow-shouldered bat is a species of bat in the family Phyllostomidae. It is native to Peru and Ecuador. It is threatened by habitat loss.

<i>Vampyressa</i> Genus of bats

Vampyressa is a genus of bats in the family Phyllostomidae, the leaf-nosed bats. They are known commonly as the yellow-eared bats or yellow-eared vampire bats.

<i>Vampyriscus nymphaeus</i> Species of bat

Vampyriscus nymphaeus is a species of bat in the family Phyllostomidae, the leaf-nosed bats. It is known commonly as the striped yellow-eared bat. It is native to Colombia, Costa Rica, Ecuador, Nicaragua, Panama, and Honduras.

<span class="mw-page-title-main">Stenodermatinae</span> Subfamily of bats

Stenodermatinae is a large subfamily of bats in the family Phyllostomidae.

<span class="mw-page-title-main">Thomas's fruit-eating bat</span> Species of bat

Thomas's fruit-eating bat, sometimes also popularly called Watson's fruit-eating bat, is a species of bat in the family Phyllostomidae. It is found from southern Mexico, through Central America to Colombia. Its South American range is to the west of the Andes. The species name is in honor of H. J. Watson, a plantation owner in western Panama who used to send specimens to the British Natural History Museum, where Oldfield Thomas would often describe them.

<i>Vampyriscus</i> Genus of bats

Vampyriscus is a genus of bats in the family Phyllostomidae, the leaf-nosed bats.

<i>Sturnira parvidens</i> Species of bat

The little yellow-shouldered Mesoamerican bat is a species of leaf-nosed bat found in Mexico and Central America.

Kalko's yellow-eared bat is a species of bat in the family Phyllostomidae. It is found in northern Panama.

Villa's little yellow-eared bat is a bat species found in Mexico to the west of the Isthmus of Tehuantepec. It is known from the Mexican states of Oaxaca, Guerrero, and Veracruz.

References

  1. 1 2 Sampaio, E.; Lim, B.; Peters, S. (2016). "Vampyriscus bidens". IUCN Red List of Threatened Species . 2016: e.T22837A22059000. doi: 10.2305/IUCN.UK.2016-2.RLTS.T22837A22059000.en . Retrieved 18 November 2021.
  2. Hoofer, S. R. & Baker, R. J. (2006). Molecular systematics of Vampyressine bats (Phyllostomidae: Stenodermatinae) with comparison of direct and indirect surveys of mitochondrial DNA variation. Molecular Phylogenetics and Evolution, 39(2), 424-438.
  3. Hoofer, S. R., et al. (2008). Phylogenetic relationships of vampyressine bats and allies (Phyllostomidae: Stenodermatinae) based on DNA sequences of a nuclear intron (TSHB-I2). Molecular Phylogenetics and Evolution, 47(2), 870-876.
  4. 1 2 3 Lee, T.E. Jr.; Scott, J.B. & Marcum, M.M. (2001). "Vampyressa bidens". Mammalian Species (684): Number 684: pp. 1–3. doi:10.1644/1545-1410(2001)684<0001:VB>2.0.CO;2. S2CID   198969191.
  5. Davis, W.B. (1975). "Individual and sexual variation in Vampyressa bidens". Journal of Mammalogy. 56 (1): 262–265. doi:10.2307/1379634. JSTOR   1379634. PMID   1113047.
  6. Davis, W.B. & Dixon, J.R. (1976). "Activity of bats in a small village clearing near Iquitos, Peru". Journal of Mammalogy. 57 (4): 747–749. doi:10.2307/1379444. JSTOR   1379444.
  7. Sampaio, E.; Lim, B.; Peters, S. (2016). "Vampyriscus bidens". IUCN Red List of Threatened Species . 2016: e.T22837A22059000. doi: 10.2305/IUCN.UK.2016-2.RLTS.T22837A22059000.en . Retrieved 18 November 2021.