Cinnamon red bat

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Cinnamon red bat
Lasiurus varius 2450267.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Lasiurus
Species:
L. varius
Binomial name
Lasiurus varius
(Poeppig, 1835)
Distribution of Lasiurus varius.png
Distribution of the Cinnamon red bat (1992)
Synonyms [2]
  • Nycticeius varius Poeppig, 1835
  • Nycticeus poepingii (Lesson, 1836)
  • Atalpha varia (Poeppig, 1835)
  • Atalapha noveboracensi (Dobson, 1878)

The cinnamon red bat (Lasiurus varius) is a species of bat in the family Vespertilionidae. It was first described from a specimen that had been collected in Chile. For more than one hundred years after its initial description, it was largely considered a synonym of the eastern red bat (Lasiurus borealis). From the 1980s onward, it was frequently recognized as distinct from the eastern red bat due to its fur coloration and differences in range. It has deep red fur, lacking white "frosting" on the tips of individual hairs seen in other members of Lasiurus . It has a forearm length of 39–42 mm (1.5–1.7 in) and a weight of 9.5–11.0 g (0.34–0.39 oz).

Contents

As in all members of its genus, females have four teats. Little is known about its reproduction, though females may give birth in winter to an average litter of two young. The young are born with their eyes closed, opening them by two weeks of age. Individuals roost solitarily or in small family groups. It is insectivorous, foraging for prey like moths and beetles using echolocation. Its echolocation calls consist of three types: search, approach, and final buzz. It is found only in South America in Chile and Argentina, and has one of the southernmost ranges of any bats. Little is known about its population size, but it is presumably large due to its large geographic range. Threats are unknown, but could include development of wind energy.

Taxonomy

The cinnamon red bat was described as a new species in 1835 by German zoologist Eduard Friedrich Poeppig, [3] who placed it in the genus Nycticeius with the scientific name Nycticeius varius. [4] The holotype had been collected in Antuco, Chile. [5] The first usage of its current name combination of Lasiurus varius was in 1870 by Leopold Fitzinger. [5] Other names that have been applied to this taxon include Nycticeus poepingii, Atalpha varia, and Atalapha noveboracensi. A variety of authors in the 1800s and 1900s considered L. varius as a synonym of the eastern red bat (L. borealis). The eastern red bat was thus thought to have a very large range, from Canada south to Tierra del Fuego. Several taxa have since been segregated from the eastern red bat, included the cinnamon red bat, saline red bat (L. salinae), and desert red bat (L. blossevillii). [3]

Beginning in the 1980s, the cinnamon red bat was more frequently recognized as distinct from the eastern red bat due to its unique fur coloration and restricted range. [3] Genetic analysis in 2015 further confirmed they were significantly different. Based on a mitochondrial gene, the cinnamon red bat is the sister taxon to a clade containing the eastern red bat, Pfeiffer's red bat, and Seminole bat. [6] It does not have any subspecies. [5]

Description

The cinnamon red bat has a forearm length of 39–42 mm (1.5–1.7 in) and a total length of 105–118 mm (4.1–4.6 in). Individuals weigh 9.5–11.0 g (0.34–0.39 oz). The wings are long and narrow, with black membranes. [3] It can be distinguished from other species in Lasiurus by its deep red fur coloration and lack of white "frosting" on the tips of individual hairs. Additionally, its uropatagium (tail membrane) is densely furred, with hairs extending past the edge of the membrane. The hairs of its back are tricolored, with black bases, yellowish middles, and vibrant, cinnamon-red tips. It has yellowish shoulder patches, a black snout, and pale, yellowish-orange coloration of its forehead and neck. Individual hairs on its belly are also tricolored, though the black bases extend much further along the hair, making the yellow band much narrower than on its back hairs. [3]

Biology and ecology

Like all members of Lasiurus, the cinnamon red bat has four teats. [3] This is unusual, as most female bats only have one pair of teats. [7] Its breeding season is not well-studied, but several pregnant females have been documented in November and a juvenile was once captured at the end of February. Females have a typical litter size of two young. Newborns in Lasiurus are born with their eyes closed; eyes open at 1012 days old. It is a solitary species, though individuals may roost in small family groups. [3]

It is insectivorous, consuming prey such as moths and beetles. It has a fast flight with low maneuverability, and may take advantage of human development to hunt insects drawn to street lights. [3] While foraging, it uses three types of echolocation calls common to insectivorous bats: search, approach, and final buzz. As it searches for insects, it uses single-harmonic calls. The beginning of search-phase calls is frequency-modulated, followed by a near-constant frequency component. These search calls have long durations and frequencies ranging from 52 33 kHz. Approach-phase calls are similar to search-phase calls, though occur closer together. The final feeding buzz consists of steep, downward frequency-modulated calls. Echolocation characteristics are influenced by environmental clutter. In more cluttered environments, the cinnamon red bat emits shorter search-phase calls closer together, whereas in less cluttered environments, search-phase calls are longer and further apart. [8]

Range and habitat

The cinnamon red bat is one of the southernmost bats in South America, [5] occurring in southern Argentina and central and southern Chile. [1] [9] In Chile it is associated with sclerophyllous forests in Central Chile and the Valdivian temperate rain forest near the coast. [3] In Argentina, it occurs in Patagonian temperate rainforests, and has been recorded in the provinces of Chubut, Neuquén, and Río Negro. It probably occurs in Tierra del Fuego, the islands off the southernmost tip of continental South America, but the only published record of the cinnamon red bat in that region was in 1902. [9] It is sympatric with only one other member of Lasiurus, the desert red bat. During the day, it roosts in the foliage of trees, though occasionally some have been documented roosting on rocks. [3]

Conservation

There is no information about its population size, but due to its large distribution it is presumed to have a large population and is therefore considered a least-concern species. Specific threats to the species are unknown, though it could be negatively impacted by the ongoing development of wind energy. [1] Regionally, it is evaluated as least concern in Chile and as data deficient in Argentina. [3]

Related Research Articles

<span class="mw-page-title-main">Vespertilionidae</span> Family of microbats

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".

<i>Lasiurus</i> Genus of bats

Lasiurus is a genus of bats in the family Vespertilionidae. Its members are known as hairy-tailed bats or red bats.

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

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

The southern yellow bat is a species of vesper bat that belongs to suborder microchiroptera (microbat) in the family Vespertilionidae. It is native to South, North and Central America, from the Rio Grande Valley of Texas in the United States to Argentina.

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

The big red bat is a species of vesper bat from South and Central America.

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

The black myotis is a vesper bat species from South and Central America.

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

The eastern red bat is a species of microbat in the family Vespertilionidae. Eastern red bats are widespread across eastern North America, with additional records in Bermuda.

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

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

The Hawaiian hoary bat, also known as ʻōpeʻapeʻa, is a species of bat endemic to the islands of Hawaiʻi. Whereas the mainland hoary bat is found throughout North America, the Hawaiian hoary bat is distributed only among the major volcanic islands of Hawaiʻi, making it the only extant and native terrestrial mammal in the state; although some studies also posit that the mainland hoary bat lives in sympatry on the Hawaiian Islands alongside the Hawaiian hoary bat, this has been disputed. The Hawaiian hoary bat was officially named the state land mammal of Hawaiʻi in 2015. It is a federally listed endangered taxon of the United States.

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

The lesser bamboo bat or lesser flat-headed bat is one of the smallest species of vesper bat, and is native to Southeast Asia.

The variegated butterfly bat is a species of vesper bat. It is sometimes also called the leaf-winged bat, or simply the butterfly bat. It is not currently endangered, but may be threatened by habitat loss in some parts of its range.

<span class="mw-page-title-main">Schlieffen's serotine</span> Species of bat

Schlieffen's serotine, also known as Schlieffen's bat or Schlieffen's twilight bat, is a species of vesper bat found in Africa. It has been placed in numerous genera since its first description in 1859, but morphological and genetic studies have confirmed it as the only species in the genus Nycticeinops. It is named for the collector of the original specimen, Wilhelm von Schlieffen-Schlieffiennburg.

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

The south-eastern long-eared bat or Corben's long-eared bat, is a species of bat found in Australia. It occurs in the woodlands of the Murray Darling Basin and adjacent areas.

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

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

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<span class="mw-page-title-main">Atacama myotis</span> Species of plant

The Atacama myotis is a species of vesper bat in the family Vespertilionidae. It is found in Chile and Peru, an example ecoregion of occurrence being the Chilean matorral.

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

The Chilean myotis is a species of vesper bat found in southern South America.

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

The golden-tipped bat is a species of Microchiropteran in the family Vespertilionidae. It is found in Papua New Guinea and in Australia, especially scattered along the eastern part of Australia. The species is considered uncommon, and is listed as endangered in Australia.

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

The southern big-eared brown bat is a species of bat from the family Vespertilionidae. Although current taxonomy treats the southern big-eared brown bat as a separate species, it is often treated as a subspecies of the small big-eared brown bat. It lives in the forests of southern Argentina and Chile; though the population of the bat in the southern part of its habitat is low, there are no major concerns to justify anything lower than a Least Concern rating in the IUCN Red List.

<span class="mw-page-title-main">Lasiurini</span>

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References

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  2. Simmons, N.B. (2005). "Order Chiroptera". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 461. ISBN   978-0-8018-8221-0. OCLC   62265494.
  3. 1 2 3 4 5 6 7 8 9 10 11 Ossa, Gonzalo; Díaz, M Mónica; Barquez, Rubén M. (2019). "Lasiurus varius (Chiroptera: Vespertilionidae)". Mammalian Species. 51 (983): 119–127. doi:10.1093/mspecies/sez016. hdl: 11336/107460 .
  4. Poeppig, E. F. (1835). Reise in Chile, Peru und auf dem Amazonenstrome: während der Jahre 1827-1832 [Trip to Chile, Peru and the Amazon River: 1827–1832]. p. 451.
  5. 1 2 3 4 Gardner, A. L. (2008). Mammals of South America, volume 1: marsupials, xenarthrans, shrews, and bats. Vol. 1. University of Chicago Press. p. 468. ISBN   978-0226282428.
  6. Baird, Amy B.; Braun, Janet K.; Mares, Michael A.; Morales, Juan Carlos; Patton, John C.; Tran, Christina Q.; Bickham, John W. (2015). "Molecular systematic revision of tree bats (Lasiurini): Doubling the native mammals of the Hawaiian Islands". Journal of Mammalogy. 96 (6): 1255–1274. doi: 10.1093/jmammal/gyv135 .
  7. Simmons, N. B. (1993). "Morphology, function, and phylogenetic significance of pubic nipples in bats (Mammalia, Chiroptera)" (PDF). American Museum Novitates (3077).
  8. Pedro, Annia Rodríguez-San; Simonetti, Javier A. (2014). "Variation in search-phase calls of Lasiurus varius (Chiroptera: Vespertilionidae) in response to different foraging habitats". Journal of Mammalogy. 95 (5): 1004–1010. doi: 10.1644/13-MAMM-A-327 .
  9. 1 2 Díaz, M. Mónica; Valenzuela, Alejandro; Sturzenbaum, Silvina; Barquez, Ruben M. (2017). "New records of bats (Chiroptera) from Santa Cruz province (Argentina) and the southernmost record of Lasiurus varius (Poeppig, 1835) for Argentina". Check List. 13 (5): 397–401. doi: 10.15560/13.5.397 .