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Post by sebbe67 on Feb 3, 2005 10:45:17 GMT
Pharotis imogene
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Post by another specialist on May 11, 2005 20:41:20 GMT
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Post by sebbe67 on Jul 24, 2005 19:18:35 GMT
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Post by another specialist on Jul 24, 2005 19:53:27 GMT
 pic found by sebbe67 link to homepage on sebbe67 last entry above |
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Post by sebbe67 on Feb 18, 2006 12:09:13 GMT
 Head illustrations from the book Mammals of new Guinea by Tim Flannery. |
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Post by another specialist on Feb 18, 2006 16:08:56 GMT
The New Guinea big-eared bat (Pharotis imogene) is an Vesper bat endemic to Papua New Guinea. It is listed as a critically endangered species due to ongoing habitat loss. It is the only member of the genus Pharotis. en.wikipedia.org/wiki/New_Guinea_big-eared_bat |
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Post by another specialist on Feb 18, 2006 16:15:31 GMT
also known as Imogene Bat
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Post by sebbe67 on Oct 1, 2006 11:45:27 GMT
Nyctophilus imogene is smaller than the New Guinean species of Nyctophilus. The noseleaf, ears and eyes are relatively larger and the face shorter than in all Nyctophilus species.
The Large-eared Nyctophilus has been collected on a single occasion in 1890 by Dr L. Loria at Kamali (Central Province). The orginal series consited of 45 individuals (Thomas 1897) but these can no longer be traced in Museuo di Storia Naturale, Genoa. The only specimens I (Tim Flannery) have been able to locate are three in Natural History museum, London and one each in the American Museum of Natural History, Australian museum and Zoologisk Museum, Copenhagen. All of the known specimens are female; the only subadult is held in the collections of Natural History Museum in London.
The collection of such a large number of specimens on a single occasion suggests that a roost, probably a maternity colonym was found, but whether in a cave or three hollow is not known. Species of Nyctophilus do not normally roost in such large numbers. Considering this species was collected in a well known region of Papua New Guinea and it has not been recorded for over a centrury, it is listed here as probably extinct.
From the book, Mammals of Papua New Guinea, by Timmothy Flannery, published 1995.
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Post by another specialist on Oct 1, 2006 14:09:58 GMT
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Post by sebbe67 on Feb 9, 2007 22:11:04 GMT
Some authors consider this species to have become extinct in 1890. However, a specimen possibly representing P. imogene was apparently collected in 1985 from the crown of a pandanus tree in Rogut Village along the Tuman River (Central Province). Unfortunately no measurements were recorded, and the specimen was destroyed in 1992. If this was indeed a specimen of P. imogene, then the species might perhaps still exist. Further surveys should be conducted near potential roost trees or caves in the Kamali and Tuman River areas of Central Province. If a population is found to have survived then it will require immediate protection. www.edgeofexistence.org/species/species_info.asp?id=39 |
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Post by another specialist on Feb 10, 2007 8:45:39 GMT
This small dark brown bat is known only from the 45 original specimens collected in 1890. All of the specimens are female, and from a single colony – possibly a maternity colony. There have been no confirmed reports of the species since this time, and it is possible that the collector wiped out the sole surviving colony of this ancient species. Evolutionary Distinctiveness The family Vespertilionidae is the second largest mammalian family, after the Muridae (Old world rats and mice). It contains 407 species in 49 genera, found throughout the world, except for extreme polar regions and remote islands. The family dates back to the middle Eocene (46 million years ago). The subfamily Nyctophilinae (big-eared bats) is represented in New Guinea by five species placed in two genera: Nyctophilus (represented by four species) and the endemic Pharotis (one species). Description Size: Head and body length: 47-50 mm Tail length: 42-43 mm Forearm length: 37.5-38.6 mm Weight: This small dark brown bat is known only from the 45 original specimens (all female), collected in 1890. Its disproportionately large ears are joined at the base. Individuals have a short snout with a complex horseshoe-shaped nose leaf. Ecology Little is known of the ecology of this species. Related species in the genus Nyctophilus spend the daytime sleeping in small caverns, crevices in rocks, tree hollows and under the bark of trees. They appear to be active throughout the year. The collection of such a large number of specimens on a single occasion suggests that a roost, probably a maternity colony, was found. Species of Nyctophilus do not normally roost in such large numbers. The morphology of the species’ ears, skull and teeth, and the known behaviour of related species, suggest that this big-eared bat gleans insects such as beetles from the leaves of plants. Habitat Lowland sclerophyll woodlands. It is not known whether these bats roost in trees or caves. Distribution Known only from Kamali, Central Province, southeastern Papua New Guinea. Population Estimate Unknown. Possibly extinct. Status Classified as Critically Endangered (CR B1+2c, C2b) on the 2006 IUCN Red List of Threatened Species Threats The species has not been recorded since the original 45 females were collected in 1890. Since these individuals were collected from a relatively well-known region of Papua New Guinea, researchers fear that the species may have already gone extinct. Any remaining populations may be at risk from habitat loss due to logging, mining and traditional agriculture. Conservation Underway There are no conservation measures in place for this species. The conservation status of the southeastern Papuan rainforests in which the species was found is relatively stable. Conservation Proposed Some authors consider this species to have become extinct in 1890. However, a specimen possibly representing P. imogene was apparently collected in 1985 from the crown of a pandanus tree in Rogut Village along the Tuman River (Central Province). Unfortunately no measurements were recorded, and the specimen was destroyed in 1992. If this was indeed a specimen of P. imogene, then the species might perhaps still exist. Further surveys should be conducted near potential roost trees or caves in the Kamali and Tuman River areas of Central Province. If a population is found to have survived then it will require immediate protection. www.edgeofexistence.org/species/species_info.asp?id=39 |
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Post by sebbe67 on May 29, 2008 20:04:12 GMT
 Source: Bats of Papua New Guinea |
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Post by another specialist on Jul 10, 2008 8:27:44 GMT
SPECIES Pharotis imogene Author: Thomas, 1914. Citation: Ann. Mag. Nat. Hist., ser. 8, 14: 382. Common Name: Thomas's Big-eared Bat Type Locality: Papua New Guinea, Central Prov., Lower Kemp Welch River, Kamali. Distribution: SE New Guinea. Status: IUCN 2003 and IUCN/SSC Action Plan (2001) – Critically Endangered. Comments: See Flannery (1995a) and Bonaccorso (1998). www.bucknell.edu/msw3/browse.asp?s=y&id=13802022 |
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Post by Melanie on Oct 6, 2008 15:13:06 GMT
Scientific Name: Pharotis imogene Species Authority Intra-specific Authority: Thomas, 1914 Common Name/s: English – Thomas's Big-eared Bat, New Guinea Big-eared Bat Assessment Information [top] Red List Category & Criteria: Critically Endangered B1ab(i,ii,iii); D ver 3.1 Year Assessed: 2008 Assessor/s Bonaccorso, F., Hamilton, S. & Parnaby, H. Evaluator/s: Lamoreux, J. (Global Mammal Assessment Team), Racey, P.A., Medellín, R. & Hutson, A.M. (Chiroptera Red List Authority) Justification: Listed as Critically Endangered (Possibly Extinct) because if this species still exists it is likely to have a very small population size, and small range size that is subject to a continued decline in extent of occurrence, area of occupancy, and the extent and quality of habitat. This species has not been recorded in more than 100 years (since 1890) and it is known only from a rapidly changing portion of southeastern Papua New Guinea. There is still a possibility that new survey methods to the region, particularly harp traps, might lead to the rediscovery of this species and such surveys are urgently needed. History: 1996 - Critically Endangered (MOST RECENT-NEEDS UPDATING) Geographic Range [top] Range Description: This species has only been recorded with certainty from Kamali on the lower Kemp Welch River, in the Central Province of South-eastern New Guinea in 1890. According to Flannery (1995) 45 individuals (probably a maternity colony) were collected by Dr. L. Loria, but only four of these specimens can now be accounted for. The species has been collected from below 100 m asl. There is a record of an animal collected at Kapa Kapa by Dr. Loria, but this specimen has been lost. According to Bonaccorso (1998) a single specimen was collected in 1985 from the crown of a Pandanus tree in Rogut Village along the Tuman River in Central Province. This specimen was destroyed in 1992. However, in 1988, a careful examination of the specimen (PM 25374), including measurements, was done as part of an ongoing revision of bats in the genus Nyctophilus confirmed that it did not belong to Pharotis imogene, but instead represented Nyctophilus microdon (Parnaby pers. comm.). Countries: Possibly extinct: Papua New Guinea Population [top] Population: Bonaccorso (1998) believes that this species is still extant, but that it is very difficult to survey with standard collecting methods, and that surveying with harp traps near potential roost sites at known localities is needed. Population Trend: Unknown Habitat and Ecology [top] Habitat and Ecology: It roosts communally in lowland sclerophyll woodland habitat, although it is not known whether the species roosts in trees or in caves (Bonaccorso 1998). Even the general habitat is not known for certain, but is assumed to be either savanna woodland, and/or lowland rainforest patches in savanna woodlands. Systems: Terrestrial Threats [top] Major Threat(s): This species is threatened by habitat loss around human population centres such as the Kamali district by reduction of area and quality of the small rainforest patches in savanna woodland, both by encroachment by fire, and human activities, particularly fire wood collection (S. Hamilton pers. comm.). If the species roosts in tree cavities, loss of such trees by fire is a likely threat. Conservation Actions [top] Conservation Actions: This species has not been recorded from any protected areas. Field surveys using appropriate sampling techniques (e.g., harp traps) are urgently needed to determine if this species is still extant. This is one of the highest priorities for surveys in Papua New Guinea (F. Bonaccorso pers. comm.). Any important roosting or foraging sites should be protected. www.redlist.org/details/136777 |
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Post by Melanie on May 31, 2014 19:13:46 GMT
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Post by Melanie on May 31, 2014 19:45:37 GMT
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Post by Sebbe on May 31, 2014 20:39:17 GMT
Wow, it is awesome to see this species rediscovered at long last. It was described based on a very large series of specimens, yet it has taken this long for someone to find it again.
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Post by Melanie on May 31, 2014 21:12:01 GMT
Well, it's a pity that the only captured specimen had to be killed to reveal the true identity of this bat. I hope they will also rediscover some other lost species from PNG like the elusive Attenborough's long-beaked echidna. By the way Julie Broken-Brow published the discovery already in November 2012 in the newsletter of the Australian Bat Society www.yumpu.com/en/document/view/10724659/abs20newsletter20no203920november202012/17. Interesting that it took another 1,5 years to confirm the true identity of Pharotis imogene. |
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Post by Sebbe on Jun 1, 2014 13:39:57 GMT
Well, it's a pity that the only captured specimen had to be killed to reveal the true identity of this bat. I hope they will also rediscover some other lost species from PNG like the elusive Attenborough's long-beaked echidna. By the way Julie Broken-Brow published the discovery already in November 2012 in the newsletter of the Australian Bat Society www.yumpu.com/en/document/view/10724659/abs20newsletter20no203920november202012/17. Interesting that it took another 1,5 years to confirm the true identity of Pharotis imogene. The Attenborough's long-beaked echidna have already been rediscovered, there was no actual animals found fair enough but plenty of digging activity found during the surveys there a few years ago, and locals seemed familiar with the animal. |
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Post by Melanie on Jun 2, 2014 11:03:14 GMT
I've just got an e-mail from the IUCN Red List
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