Orange leaf-nosed bat

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Orange leaf-nosed bat
Rhinonicteris aurantia.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Rhinonycteridae
Genus: Rhinonicteris
Species:
R. aurantia
Binomial name
Rhinonicteris aurantia
(Gray, 1845) [2]
Orange Leaf-nosed Bat area.png
Orange leaf-nosed bat range

The orange leaf-nosed bat (Rhinonicteris aurantia) is a bat in the family Hipposideridae. [3] It is the only living species in the genus Rhinonicteris [3] which is endemic to Australia, occurring in the far north and north-west of the continent. They roost in caves, eat moths, and are sensitive to human intrusion.

Contents

Description

A small bat weighing 7–11 grams that resides in large colonies of subterranean environs, usually caves and abandoned mines. The colour of the fur is variable between individuals, brownish, a reddish orange shade, lemon-yellow or white. [4] [5] The forearm measurement range from 42 to 46. [4] A complex structure—a characteristic of some bats referred to as 'nose-leaf'—is broad and flattened at the base, with a central gap, similar to a horseshoe-shape of related species. The top of the leaf-shaped structure is scalloped, and the nasal pits deeply recessed, an opening behind this structure leads from an enlarged secretory gland. [4] The noseleaf does not have by any forwardly projecting parts at the deep cleft of the lower section. [5] The ears, which are smaller than similar species, are sharply pointed at the top. [4]

The measurements for the head and body combined are 43 to 53 millimetres. [5]

Taxonomy

Rhinonicteris aurantia is a species of bat, currently allied to the family Hipposideridae that groups some 'leaf-nosed bats'. The first description was published by John Edward Gray in 1845, placing the species in genus Rhinolophus . [2] [6] The syntype for the species in located at the British Museum of Natural History, the note stating it was collected at Port Essington "near the hospital". [6] Gould elucidates the type's collection as an animal shot from the air by Dr. Sibbald of the Royal Navy. [7] [6]

A western form is distinguished from the northern population, superficially similar yet genetically distinct, this remote group in is identified separately for its conservation status assessment as the Pilbara form and may be a separate taxon. [4] [5]

The genus name published as Rhinonycteris Gray, J.E. 1866 has been regarded as a later correction by Gray, but this has also been determined to be an unjustified emendation. [8] [6] The specific epithet has also taken the spelling "aurantius", likewise considered incorrect in this generic combination. [7] [3] Common names include the orange leaf-nosed bat, and the golden or orange horseshoe bat. [6]

Distribution

The range of Rhinonicteris aurantia is across the north of the continent—the Top End and Kakadu—which encompasses the northernmost part of the Northern Territory, and extends into of Western Australia and north-west Queensland. A geographically separate population is found in the Pilbara region of the north-west. [4] The westernmost point of the distribution range is around Derby, Western Australia and extends from here to the east at Lawn Hill, Queensland. [5]

One site noted for its large colony, numbering in the thousands, is located at Tolmer Falls in the Lichfield National Park. A preference is also given to larger sites amongst the Kimberley limestone caves, where the largest colonies of the species occur. At Tunnel Creek the bat is found co-habiting and hunting with several other bat species. [4]

The habit of flying close to the ground sees the species collected by the grille of road trains, frequently transporting them en route from Katherine to the north of the state. [4]

Ecology

As with many bats in arid regions, they are insectivores. [4] R. aurantia is found in large caves cohabiting with others bat species. These include the yellow-lipped Vespadelus douglasorum , northern bentwing Miniopterus orianae , the western cave bat and ghost bat Macroderma gigas . [4] The preferred cave environ is warm and humid, other opportunities for roosting sites include tree hollows. The colony may number in the thousands, but the individuals also cluster in groups of twenty and over. [9]

The diet of insects includes various beetles, weevils, bugs, wasps and ants, but the common prey is moths. They venture out several times during their night-time hunting activities. [9]

A new species of parasite, Opthalmodex australiensis , [10] was found on a specimen of the bat, this minute organism seems to occur in the eye as a low grade infestation and subsist on epithelial tissue. [11] Another organism, Chiroptella geikiensis , a species of the chigger family Trombiculidae was discovered on specimens of this bat. [12] [13]

Illustration of "Rhinolophus aurantius". Gould and H. C. Richter, 1863 Rhinolophus aurantius Gould Mamm Aust vol 3 plate 35.jpg
Illustration of "Rhinolophus aurantius". Gould and H. C. Richter, 1863

The colony may desert a site if intruded upon by visitors, the species is noted as even more susceptible to human activities near their roosts than other bats. Direct threats include destruction of habitat by mining, clearing for agriculture and pastoralism that results in the loss of food resources. [9]

A species describing fossil material found at the Riversleigh site in Northern Queensland, Brachipposideros nooraleebus , closely resemble this species. [14] The only described species of the genus is based on Miocene fossils also found at Riversleigh. [15]

The conservation status of the species is least concern. [1] The population identified as the Pilbara form is vulnerable to extinction. [5]

Related Research Articles

<span class="mw-page-title-main">Horseshoe bat</span> Family of mammals

Horseshoe bats are bats in the family Rhinolophidae. In addition to the single living genus, Rhinolophus, which has about 106 species, the extinct genus Palaeonycteris has been recognized. Horseshoe bats are closely related to the Old World leaf-nosed bats, family Hipposideridae, which have sometimes been included in Rhinolophidae. The horseshoe bats are divided into six subgenera and many species groups. The most recent common ancestor of all horseshoe bats lived 34–40 million years ago, though it is unclear where the geographic roots of the family are, and attempts to determine its biogeography have been indecisive. Their taxonomy is complex, as genetic evidence shows the likely existence of many cryptic species, as well as species recognized as distinct that may have little genetic divergence from previously recognized taxa. They are found in the Old World, mostly in tropical or subtropical areas, including Africa, Asia, Europe, and Oceania.

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

The ghost bat is a species of bat found in northern Australia. The species is the only Australian bat that preys on large vertebrates – birds, reptiles and other mammals – which they detect using acute sight and hearing, combined with echolocation, while waiting in ambush at a perch. The wing membrane and bare skin is pale in colour, their fur is light or dark grey over the back and paler at the front. The species has a prominent and simple nose-leaf, their large ears are elongated and joined at lower half, and the eyes are also large and dark in colour. The first description of the species was published in 1880, its recorded range has significantly contracted since that time.

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

The chocolate wattled bat is a bat in the family Vespertilionidae. It is found only in Australia, including the island Tasmania, and widespread in southern regions. It is known to reside from sea level to at least 1,570 metres (5,150 ft) in Victoria.

The yellow-lipped cave bat is a vesper bat that only occurs in the Kimberley region of northwest Australia. The bat was first captured at Tunnel Creek in 1958 and a description published nearly twenty years later. Aside from observations of their physical characteristics, a preference for caves, and hunting insects over streams, little is known of the species.

<span class="mw-page-title-main">Fawn leaf-nosed bat</span> Species of bat

The fawn leaf-nosed bat is a species of bat in the family Hipposideridae found in Australia, Indonesia, Malaysia, the Philippines and Vanuatu.

<span class="mw-page-title-main">Semon's leaf-nosed bat</span> Species of bat

Semon's leaf-nosed bat or Semon's roundleaf bat is a species of bat in the family Hipposideridae. It is found in Australia and Papua New Guinea.

<span class="mw-page-title-main">Schneider's leaf-nosed bat</span> Species of bat

Schneider's leaf-nosed bat or Schneider's roundleaf bat is a species of bat in the family Hipposideridae. It is endemic to South Asia. Its natural habitats are subtropical or tropical dry forests, caves, and urban areas.

<span class="mw-page-title-main">Northern leaf-nosed bat</span> Species of bat

The northern leaf-nosed bat is a micro-bat of the family Hipposideridae, known as "leaf-nosed" bats. The species is endemic to northern regions of Australia. They are highly manoeuvrable in flight, and use echolocation to forage for insect prey.

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

The smaller horseshoe bat is a species of bat in the family Rhinolophidae. It is found in Australia and Papua New Guinea.

<i>Rhinonicteris</i> Genus of bats

Rhinonicteris is a genus of leaf-nosed microbats, represented by fossil taxa found at Riverleigh in Queensland and the extant species Rhinonicteris aurantia, which occurs in the north and west of the Australian continent.

Brachipposideros is an extinct genus of leaf-nosed bats known from Riversleigh, north-western Queensland, Australia and the Languedoc-Roussillon Region, France. The fossils date to the late Oligocene to early Miocene.

<span class="mw-page-title-main">Arnhem leaf-nosed bat</span> Species of mammal

The Arnhem leaf-nosed bat is a species of bat in the family Hipposideridae. It lives in the sandstone areas of Kakadu National Park.

Brachipposideros nooraleebus is an extinct species of bat, known from a large series of fossil specimens found at Riversleigh fossil site in Australia. The nearest living relative is the orange horseshoe bat, Rhinonicteris aurantia, which occurs in the same area.

Rhinonicteris tedfordi is an extinct species of microbat, of the order Chiroptera, known from fossil material found in Australia.

<span class="mw-page-title-main">Rhinonycteridae</span> Family of bats

Rhinonycteridae is a family of bats, within to the suborder Yinpterochiroptera. The type species, the orange nose-leafed species group Rhinonicteris aurantia, is found across the north of Australia.

Brevipalatus mcculloughi is a species of bat that existed in the early Miocene. It was discovered at a fossil deposit of the Riversleigh World Heritage Area.

Xenorhinos halli is a species of bat that existed in the early Miocene. It was discovered at a fossil deposit of the Riversleigh World Heritage Area in the north of Australia.

Hipposideros bernardsigei is a hipposiderid species of bat known by fossil specimens, one of the many new taxa of microchiropterans discovered in the Riversleigh World Heritage Area.

Hipposideros winsburyorum is a hipposiderid species of bat known by fossil specimens, one of the many new taxa of chiropterans discovered in the Riversleigh World Heritage Area. The species existed during the Pliocene.

References

  1. 1 2 Armstrong, K.; Reardon, T.; Woinarski, J.; Burbidge, A.A. (2017). "Rhinonicteris aurantia". IUCN Red List of Threatened Species . 2017: e.T19589A21998626. doi: 10.2305/IUCN.UK.2017-2.RLTS.T19589A21998626.en . Retrieved 16 November 2021.
  2. 1 2 Gray, J.E. 1845. Description of some new Australian animals. Appendix. pp. 405-411 in Eyre, E.J. (ed.). Journals of Expeditions of Discovery into Central Australia and Overland from Adelaide to King George's Sound in the Years 1840-1; sent by the colonists of South Australia, with the sanction and support of the Government: including an account of the manners and customs of the Aborigines and the state of their relations with Europeans. London : T. & W. Boone Vol. 1. [405].
  3. 1 2 3 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. 378. ISBN   978-0-8018-8221-0. OCLC   62265494.
  4. 1 2 3 4 5 6 7 8 9 10 Richards, G.C.; Hall, L.S.; Parish, S. (photography) (2012). A natural history of Australian bats : working the night shift. CSIRO Pub. pp. 12, 16, 17, 18, 42, 48, 157. ISBN   9780643103740.
  5. 1 2 3 4 5 6 Menkhorst, P.W.; Knight, F. (2011). A field guide to the mammals of Australia (3rd ed.). Melbourne: Oxford University Press. p. 146. ISBN   9780195573954.
  6. 1 2 3 4 5 "Species Rhinonicteris aurantia (J.E. Gray, 1845)". Australian Faunal Directory. Australian Government. Retrieved 31 December 2018.
  7. 1 2 Gould, John (1863). The mammals of Australia. Vol. 3. Printed by Taylor and Francis, pub. by the author. pp. pl.35 et seq.
  8. ↑ Gray, John Edward (1866). "A revision of the genera of Rhinolophidae, or horseshoe bats". Proceedings of the Zoological Society of London. 1866: 81–83. ISSN   0370-2774.
  9. 1 2 3 "Orange Leaf-nosed Bat, Scientific name: Rhinonicteris aurantius". The Australian Museum. 2018-10-12. Retrieved 31 December 2018.
  10. ↑ "Ophthalmodex australiensis". Atlas of Living Australia. Australian Government. Retrieved 4 January 2019.
  11. ↑ Woeltjes, A. G. W.; Lukoschus, F. S. (1981). "Parasites of Western Australia XIV Two new species of Ophthalmodex Lukoschus and Nutting (Acarina: Prostigmata: Demodicidae) from the eyes of bats". Records of the Western Australian Museum. 9 (3): 307–313. ISSN   0312-3162.
  12. ↑ Lee Goff, M. (1979). "Species of chigger (Acari Trombiculidae) from the orange horseshoe bat Rhinonicteris aurantius". Records of the Western Australian Museum. 8 (1): 93–96. ISSN   0312-3162.
  13. ↑ Halliday, R. B. (1998). Mites of Australia: A Checklist and Bibliography. Csiro Publishing. p. 2093. ISBN   9780643105898.
  14. ↑ Hand, Suzanne J. (1993). "First skull of a species of Hipposideros (Brachipposideros) (Microchiroptera: Hipposideridae). from Australian Miocene sediments". Memoirs of the Queensland Museum. 33: 179–192. ISSN   0079-8835.
  15. ↑ Foley, Nicole M.; Thong, Vu Dinh; Soisook, Pipat; Goodman, Steven M.; Armstrong, Kyle N.; Jacobs, David S.; Puechmaille, Sébastien J.; Teeling, Emma C. (February 2015). "How and Why Overcome the Impediments to Resolution: Lessons from rhinolophid and hipposiderid Bats". Molecular Biology and Evolution. 32 (2): 313–333. doi:10.1093/molbev/msu329. PMC   4769323 . PMID   25433366.
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