Southern yellow bat | |
---|---|
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Chiroptera |
Family: | Vespertilionidae |
Genus: | Dasypterus |
Species: | D. ega |
Binomial name | |
Dasypterus ega Gervais, 1856 | |
The southern yellow bat (Dasypterus ega) 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 southern yellow bat is a small bat covered with yellow fur as its name. Generally, females are larger than males. Forearm length of female averages 4% (1.83 mm) greater than that of males. [2]
Southern yellow bats occur in the southwestern United States to northern Argentina and Uruguay, with the most austral record being Buenos Aires province, Argentina, at 40° S. [3] They reside in wooded area such as forest, foliage, and palms. [4] They occasionally occupy other sites that resemble large dead leaves, such as dried corn stalks and thatched roofing [5] This species roosts in trees and vegetation. [6] In Texas, their preferred roosting sites are the frond "skirts" of both wild and ornamental palm trees, such as Sabal mexicana and Washingtonia robusta . These are collections of dead fronds against the trunk and provide a favored dark habitat for the bats. Palms are also home to insects, which the bats eat. [7]
The southern yellow bat is a nocturnal insectivore. They forage for one to two hours after sunset on small to medium-sized flying insects. They usually feed near their roost, and go no farther than necessary for water.
Lasiurus ega copulates before the end of hibernation, but a female L. ega delays its ovulation and stores the sperm for 6 months and fertilizes it later. All reproductive organs involuted following mating in July (early winter) and remained inactive until the following April (autumn). [8] Gestation is continued for 3-3.5 months, and young are born in late. This species is monoestrous. [2]
The southern yellow bat flies far out to sea and seasonally migrates southward from extreme northern portions of its range. [2]
In the northern hemisphere, males of L. ega become scarce between April and June, while females are present year-round, suggesting a migratory strategy. [2] L. ega shows a tendency to migrate toward the Equator, as described for other species of the genus. [2] Southern yellow bats that migrate along coastlines take shortcuts over water. Many North American migrant bats can be found at a distance of several kilometers from their normal destination during fall and spring migrations, probably having been blown there by wind. [9] Both records of L. ega in the Southern Hemisphere indicate movements at the end of summer and beginning of fall, supporting the theory that at least some animals migrate to avoid cold temperatures. With this second sighting, the probability that both records of this species over the South Atlantic were the result of wind has become less likely. [3]
The tricolored bat is a species of microbat native to eastern North America. Formerly known as the eastern pipistrelle, based on the incorrect belief that it was closely related to European Pipistrellus species, the closest known relative of the tricolored bat is now recognized as the canyon bat. Its common name "tricolored bat" derives from the coloration of the hairs on its back, which have three distinct color bands. It is the smallest bat species in the eastern and midwestern US, with individuals weighing only 4.6–7.9 g (0.16–0.28 oz). This species mates in the fall before hibernation, though due to sperm storage, females do not become pregnant until the spring. Young are born helpless, though rapidly develop, flying and foraging for themselves by four weeks old. It has a relatively long lifespan, and can live nearly fifteen years.
The Indiana bat is a medium-sized mouse-eared bat native to North America. It lives primarily in Southern and Midwestern U.S. states and is listed as an endangered species. The Indiana bat is grey, black, or chestnut in color and is 1.2–2.0 in long and weighs 4.5–9.5 g (0.16–0.34 oz). It is similar in appearance to the more common little brown bat, but is distinguished by its feet size, toe hair length, pink lips, and a keel on the calcar.
The hoary bat is a species of bat in the vesper bat family, Vespertilionidae. It lives throughout most of North America.
The Argentine brown bat, is a bat species from South and Central America.
The silver-tipped myotis is a species of mouse-eared bat found in a range of lowland habitats in the Americas.
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 evening bat is a species of bat in the vesper bat family that is native to North America. Hunting at night, they eat beetles, moths, and other flying insects.
The common noctule is a species of insectivorous bat common throughout Europe, Asia, and North Africa.
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.
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 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 northern yellow bat is a non-migratory bat in the family Vespertilionidae, typically active year-round except during abnormally frigid winter weather, during which they will induce torpor.
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 long-legged myotis is a species of vesper bat that can be found in western Canada, Mexico, and the western United States.
Scotophilus is a genus of vespertilionid bats commonly called yellow bats. They are found in southern Asia and Africa. They are the only members of the tribe Scotophilini.
Myotis septentrionalis, known as the northern long-eared bat or northern myotis, is a species of bat native to North America. There are no recognized subspecies. The northern long-eared bat is about 3–3.7 inches in length, with a wingspan of 9–10 inches. It is distinguishable by its long ears when comparing it to other bats in its genus. This species is commonly found in the northern United States and Southern Canada east of British Columbia. The geographic range includes 37 states.
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.
Dasypterus is a genus of or subgenus of vesper bat. As a genus, it includes species that were formerly in the genus Lasiurus. Collectively, members of Dasypterus are referred to as the yellow bats.