Micronomus

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East-coast free-tailed bat
Mormopterus norfolkensis.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Molossidae
Genus: Micronomus
Troughton, 1944
Species:
M. norfolkensis
Binomial name
Micronomus norfolkensis
(J.E. Gray, 1839)
Synonyms
  • Molossus norfolkensis J. E. Gray, 1839 [2]

Micronomus norfolkensis is a species of molossid bat, a family of flying mammals. The bat is endemic to Australia, where it occurs from southeastern Queensland to eastern New South Wales. [1] They are the sole species of genus Micronomus and referred to by variations on east-coast free-tailed bat.

Contents

Taxonomy

The description of the species was published by John Edward Gray in 1839. [3] The specific epithet is named for Norfolk Island, where the type specimen was alleged to have been collected. [4]

Micronomus norfolkensis is the type species of genus Micronomus, and the only currently recognised. The name of the taxon was published in a checklist by Tom Iredale and Ellis Troughton in 1934, [5] but this lacked a diagnosis and designated nomen nudum . Troughton gave the name again, with a valid description, in Furred Animals of Australia in 1944. [6] [7] The print date of Troughton's book is 1943, but his correspondence with the publisher has determined it was not issued until 1944. The taxon was published with a revised diagnosis in 2014, which separated this subgenus and Setirostris , also with a sole species ( Mormopterus eleryi ), from the diversity discovered in Australian molossids. [7] This revision assigned the taxon to a subgenus, giving the combination Mormopterus (Micronomus) norfolkensis, before the elevation to a monotypic arrangement as genus Micronomus. [3]

The species is also referred to as the east-coast free-tailed bat, east-coast freetail bat, and eastern coastal free-tailed bat. [8] [3] Other common names include eastern little mastiff bat [1] and eastern freetail-bat. [9]

The description for Micronomus was reviewed in an evaluation of the taxonomic concepts (Reardon, 2014), following a description published in 2008 by the same author. [7] The new diagnosis identified the number of lower incisors of Micronomus (3) differed from the species allied to Mormopterus (2) and lacked the pronounced gular sac that is present in Mormopterus. The new subgenus, later elevated to genus, Setirostris , was distinguished by the form of the corresponding upper molars, the lack of the course bristles on the face of Setirostris, and the great difference in morphology of the glans penis; phylogenic support was provided by molecular comparisons of alleles and mitochondrial DNA. A similar diagnosis is provided to separate Ozimops , dentition, penis morphology, and the phylogenetic analysis, but notes the more evidently dome shape profile of the skull, which is significantly flattened in species of that genus. [7]

Description

This bat has dark brown to reddish brown fur with a paler belly. [9]

Biology and ecology

The species has been collected only occasionally, and little is known about its biology and ecology. Although the species may roost communally, it is usually solitary. [9]

Range and habitat

It has been observed in dry eucalypt forest, wet sclerophyll forest, and riparian rainforest habitat. A colony was found roosting in a house. [1] Females with young have been observed in grey mangrove (Avicennia marina) forests. [10]

Conservation

It is thought that there are between 1011,000 mature individuals. Threats to the species may include habitat loss from timber harvesting, coastal development, and alterations of natural fire regimes. [1]

Related Research Articles

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

The Molossidae, or free-tailed bats, are a family of bats within the order Chiroptera. The Molossidae is the fourth-largest family of bats, containing about 110 species as of 2012. They are generally quite robust, and consist of many strong-flying forms with relatively long and narrow wings with wrinkled lips shared through their genus. Their strong flying form allows them to fly 60 miles per hour using tail winds and at altitudes over 10,000 feet. This makes them unique among bats, as they are the only bat family that withstands the elevation. They are widespread, being found on every continent except Antarctica. They are typically found in caves, abandoned mines, or tunnels.

<i>Mormopterus</i> Genus of bats

Mormopterus is a genus of molossid microchiropterans, small flying mammals referred to as free-tailed bats. The genus has been the subject of several revisions, and the diversity of taxa centred on Australia were separated to a new genus Ozimops, and two monotypic genera, Setirostris and Micronomus. The species of Mormopterus, in this stricter sense, are only found in areas outside of Australia and West Papua.

<i>Ozimops planiceps</i> Species of bat

Ozimops planiceps is a small bat in the family Molossidae, native to Australia and Indonesia.

<span class="mw-page-title-main">Natal free-tailed bat</span> Species of bat

The Natal free-tailed bat is a species of bat in the family Molossidae, the free-tailed bats. It is endemic to the island of Mauritius. It is known from fewer than five locations in its range, but it is common at a few sites. It roosts in caves, and it is considered to be an endangered species due to disturbance of its cave habitat.

<span class="mw-page-title-main">Peters's wrinkle-lipped bat</span> Species of bat

Peters's wrinkle-lipped bat, also called Peters's goblin bat, is a species of bat in the family Molossidae, the free-tailed bats. It is endemic to Madagascar, where it is widespread and in some areas abundant. It commonly roosts in human-made structures, sometimes in colonies with other free-tailed bat species. It forages in the open, often in agricultural areas. The bat is sexually dimorphic, with males larger than females.

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

The little goblin bat is a species of bat in the family Molossidae, the free-tailed bats. It is endemic to Cuba.

<span class="mw-page-title-main">Papuan sheath-tailed bat</span> Species of bat

The Papuan sheath-tailed bat is a species of bat in the family Emballonuridae which occurs at the Cape York Peninsula and New Guinea. The poorly known species hunts in open forests for night flying insects.

<span class="mw-page-title-main">White-striped free-tailed bat</span> Species of bat

The white-striped free-tailed bat is a species of bat in the family Molossidae. Its echolocation calls are audible to humans, which is a characteristic found in only a few microbat species. The species was formerly classified as Tadarida australis.

<i>Setirostris</i> Genus of bats

Setirostris eleryi is a species of small insectivorous bat found in inland eastern Australia. It is the sole species of the molossid genus Setirostris, a name that refers to the coarse bristles on their faces. Earlier common names have referred to this unique feature, and the 'free-tail' that is a common feature of its microchiropteran family, the Molossidae; no single common name emerged during the taxonomic revisions that identified what was referred to as the bristle-faced freetail.

Ozimops loriae is a species of bat found in Australia and Papua New Guinea.

Ozimops ridei is a species of molossid bat found in eastern Australia.

Ozimops petersi, the inland free-tailed bat is a species of bat found in Australia.

Austronomus, known as Australasian free-tailed bats, is a molossid genus of microchiropterans. The two recognised species are the white-striped Austronomus australis, found in a wide distribution range across Australia, and the New Guinea species Austronomus kuboriensis.

Ozimops kitcheneri, the south-western free-tailed bat, is a species of molossid bat found in Southwest Australia. A small flying mammal, it forages in forests and woodlands for insects.

Darrell John Kitchener is a biologist who has been active in mammalian research in Western Australia and Indonesia. He is the author of over one hundred papers, published while employed as the senior research biologist at the Western Australian Museum, and described many new species of mammals during his 28 years in that position. Kitchener was born on 9 June 1943 in Victoria, Australia. He obtained degrees in botany and zoological sciences at the University of Tasmania and completed his Ph.D. at the University of Western Australia. His works include contributions to the Australian Museum's Complete book of Australian mammals.

Ozimops is a genus of molossid bats found in Australia, Indonesia and Papua New Guinea.

Ozimops lumsdenae is a species of molossid bat found in Australia, the largest of the genus Ozimops.

Ozimops cobourgianus is a species of molossid bat, insectivorous flying mammals known as freetail bats, which are found in north and west coastal regions of Australia. First described in 1959, the group were later recognised as species Mormopterus cobourgianus and soon placed with a new genus. They are associated with mangrove habitat and roost in the hollows of those trees, and known to seek food there and in eucalypt or melaleuca woodland or other coastal habitat. A smaller bat of genus Ozimops, O. cobourgianus are around fifty millimetres long and weigh six to ten grams. Little is known of their habits.

Ozimops halli, also referred to as the Cape York free-tailed bat, is a species of molossid bat found at the Cape York Peninsula in Australia.

Furred Animals of Australia is a general reference book, first published in 1931, that gives accounts of Australian mammals, the continent's often unique marsupial and placental mammal fauna. The text and research for the book was undertaken by the mammologist and museum curator Ellis Le Geyt Troughton. Colour plates for the work were produced by Neville W. Cayley, whose popular standard guide What Bird is That? inspired Troughton's working title What Mammal is That?. The second edition of the work, while dated 1943 on the title page, was issued by Angus and Robertson in 1944. It remained the only authoritative treatment of the continent's mammals to be readily available during the mid-twentieth century.

References

  1. 1 2 3 4 5 McConville, A.; Pennay, M. (2020). "Micronomus norfolkensis". IUCN Red List of Threatened Species . 2020: e.T76776686A22084304. doi: 10.2305/IUCN.UK.2020-3.RLTS.T76776686A22084304.en . Retrieved 18 November 2021.
  2. Allison, F. R. (1989). "Molossidae" (PDF). In Walton, D. W.; Richardson, B. J. (eds.). Fauna of Australia. AGPS Canberra. p. 7. ISBN   9780644060561.
  3. 1 2 3 Jackson, S.; Groves, C. (2015). Taxonomy of Australian Mammals. CSIRO Publishing. p. 269. ISBN   9781486300136.
  4. Jenkins, P.; Mckenzie, N.; Adams, M.; Reardon, T. (12 September 2008). "A new species of Australian freetail bat Mormopterus eleryi sp. nov. (Chiroptera: Molossidae) and a taxonomic reappraisal of M. norfolkensis (Gray) [abstract]". Zootaxa. 1875 (1): 1–31. doi:10.11646/zootaxa.1875.1.1. ISSN   1175-5334.
  5. Iredale, T.; Troughton, Ellis Le G. (4 May 1934). "A check-list of the mammals recorded from Australia". Australian Museum Memoir. 6: 1–122. doi: 10.3853/j.0067-1967.6.1934.516 .
  6. Troughton, E.G. (1944). Furred Animals of Australia (2nd ed.). Sydney: Angus and Robertson. [print date 1943]
  7. 1 2 3 4 Reardon, T. B.; McKenzie, N. L.; Cooper, S. J. B.; Appleton, B.; Carthew, S.; Adams, M. (2014). "A molecular and morphological investigation of species boundaries and phylogenetic relationships in Australian free-tailed bats Mormopterus (Chiroptera : Molossidae)". Australian Journal of Zoology. 62 (2): 109–136. doi: 10.1071/ZO13082 . hdl: 10536/DRO/DU:30070309 . ISSN   1446-5698.
  8. Menkhorst, P.W.; Knight, F. (2011). A field guide to the mammals of Australia (3rd ed.). Melbourne: Oxford University Press. p. 172. ISBN   9780195573954.
  9. 1 2 3 Eastern Freetail-bat Profile. Threatened Species. Office of Environment and Heritage. NSW Government. Downloaded on 25 March 2015.
  10. McConville, A., Law, B. S., & Mahony, M. J. (2013). Mangroves as maternity roosts for a colony of the rare east-coast free-tailed bat (Mormopterus norfolkensis) in south-eastern Australia. Wildlife Research 40(4), 318-27.