| Hoary bat | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Chiroptera |
| Family: | Vespertilionidae |
| Genus: | Lasiurus |
| Species: | L. cinereus |
| Binomial name | |
| Lasiurus cinereus (Beauvois, 1796) | |
 | |
| Distribution of the hoary bat (2008) | |
The hoary bat (Lasiurus cinereus) [2] is a species of bat in the vesper bat family, Vespertilionidae. It lives throughout most of North America (and possibly also in Hawaii, although this is disputed).
The hoary bat was described as a new species in 1796 by Palisot de Beauvois. Beauvois noted that the holotype was collected in the US state of Pennsylvania by an individual identified as "Master Pancake". [3] It has many taxonomic synonyms, including Vespertilio pruinosis (Say, 1823) and Atalpha mexicana (Saussure, 1861). Mammalogist Harrison Allen was the first to use its current name combination of Lasiurus cinereus, doing so in 1864. [4] In a later publication, Allen placed it in the now-defunct genus Atalapha, with a scientific name of Atalpha cinerea. [5]
The South American hoary bat (L. villosissimus), which is found throughout South America, and the Hawaiian hoary bat (L. semotus), which is endemic to Hawaii, were both previously classified under the hoary bat, but phylogenetic evidence supports them being distinct species. [6]
Some have argued to elevate the subgenus (Aeorestes) to a genus level classification for L. cinereus. However, this has not been accepted by taxonomic authorities as it violates the International Code of Zoologigal Nomenclature [7] [8]
It ranges throughout North America, from northern Canada south to Guatemala. Although the Hawaiian subspecies L. semotus was reclassified into a distinct species, studies in 2015 and 2017 found evidence supporting two different colonization events of Hawaii by Lasiurus species; one about 1.4 million years ago by the ancestors of L. semotus, but also a much more recent colonization by true L. cinereus. This would mean that L. cinereus also inhabits the Hawaiian islands, in cryptic sympatry with L. semotus. [6] [9] However, in contrast, a 2020 genetic study found no evidence of multiple bat species on Hawaii, finding the islands to only be inhabited by a single species, L. semotus, and attributed the previous results as a consequence of incomplete lineage sorting. [10]
The hoary bat averages 13 to 14.5 cm (5.1 to 5.7 in) long with a 40 cm (15.5 in) wingspan and a weight of 26 g (0.92 oz). It is the largest bat normally found in Canada. Its coat is dense and dark brown, with white tips to the hairs that give the species its 'hoary' appearance for which it is named. [11] The body is covered in fur except for the undersides of the wings. Males and females are dimorphic in body mass, with females 40% heavier than males. [12]
The bat normally roosts alone on trees, hidden in the foliage, but on occasion has been seen in caves with other bats. It prefers woodland, mainly coniferous forests, but hunts over open areas or lakes. It hunts alone and its main food source is moths. The bats can cover an impressive 39 km (24 mi) while foraging. [11] Hoary bats are long-distance migrants, spending the winter in Central America and the southwestern United States and the spring and summer in more northern latitudes in the United States and Canada. [13]
The reproductive cycle of the hoary bat is not yet fully documented, but it is thought that they mate in August with birth occurring in June of the following year. It is thought that the gestation period is only 40 days and that mammalian embryonic diapause (delayed implantation) may play a role. Females typically bear twins, though litter sizes range from 1–4. [14] Young are typically weaned after 7 weeks. [15]
While not listed as threatened or endangered, hoary bats suffer significant mortality from wind turbines. Across the United States in 2005, 40% of all bats killed by wind turbines were hoary bats—over 1000 hoary bats were killed in 2005. [16] Most bat deaths occur during migration in the spring and fall. [17] One common theory explaining this is that bats are attracted to the tall structure, possibly believing them to be trees that can be used for rest. [18]
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".
Lasiurus is a genus of bats in the family Vespertilionidae. Its members are known as hairy-tailed bats or red bats.
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.
The big red bat is a species of vesper bat from South and Central America.
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.
The Hawaiian hoary bat, also known as ʻōpeʻapeʻa, is a species of bat endemic to the islands of Hawaiʻi. The Hawaiian hoary bat occupies the major Hawaiian islands, making it the only extant and native terrestrial mammal in the islands. Some studies report that the mainland hoary bat lives in sympatry on the Hawaiian Islands alongside the Hawaiian hoary bat, although this is 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.
The Seminole bat is a species of bat in the family Vespertilionidae.
The western yellow bat is a species of vesper bat found in Mexico and the southwestern United States. This species roosts in trees such as Populus fremontii, Platanus wrightii, and Quercus arizonica. If available, the western yellow bat will use the dead fronds that encircle palm trees as a roosting site.
The silver-haired bat is a solitary migratory species of vesper bat in the family Vespertilionidae and the only member of the genus Lasionycteris.
The Vespertilioninae are a subfamily of vesper bats from the family Vespertilionidae.
Rhogeessa is a genus of bats within the vesper bats family, Vespertilionidae.
The cinnamon red bat 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. 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).
The western red bat or desert red bat is a species of microbat in the family Vespertilionidae. It is found in western North America and Central America.
Synemporion keana is an extinct species of bat which lived in what is now Hawaii from at least 320,000 years ago to around 2,100 years ago. It is the only species in the genus Synemporion.
Aeorestes is a subgenus of Lasiurus commonly known as the hoary bats.
The South American hoary bat is a species of vesper bat found in South America.
Dasypterus is a subgenus of Lasiurus. Collectively, members of Lasiurus (Dasypterus) are referred to as the yellow bats.
Kawailoa Wind Farm is a wind farm near the Waimea Valley, on the North Shore of Oahu. Commissioned in 2011, it comprises 28 wind turbines. At maximum capacity the farm is able to produce 69 MW. Kawailoa Wind Farm has been operational since 2012 and is a part of Hawaii's renewable energy efforts. Despite its clean energy, there are unintended ecosystem impacts on some native species of birds and bats, and efforts to mitigate these threats are ongoing.
Lasiurini is a tribe of bats in the family Vespertilionidae. It contains three genera of bats found in the Americas. All three genera were previously considered one genus, Lasiurus, but have since been split from one another. However, the validity of this split is still debated.
Media related to Lasiurus cinereus at Wikimedia Commons
Data related to Lasiurus cinereus at Wikispecies