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Lepilemur tymerlachsoni

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA PRIMATES LEPILEMURIDAE

Scientific Name: Lepilemur tymerlachsoni
Species Authority: Louis Jr., Engberg, Lei, Geng, Sommer, Randriamampionona, Randriamanana, Zaonarivelo, Andriantompohavana, Randria, Prosper. Ramaromilanto, Rakotoarisoa, Rooney & Brenneman, 2006
Common Name(s):
English Nosy Be Sportive Lemur, Hawks' Sportive Lemur
Synonym(s):
Lepilemur tymerlachsonorum Louis Jr., Engberg, Lei, Geng, Sommer, Randriamampionona, Randriamanana, Zaonarivelo et al., 2006 [illegitimate emendation]
Taxonomic Notes: Formerly, the sportive lemurs found on Nosy Bé were considered to be L. dorsalis. Zinner et al. (2007) examined conflicting results in the genetic analysis of sportive lemurs in northwestern Madagascar, those within in the range of what once considered to be Lepilemur dorsalis. Since the type localities of L. dorsalis Gray, 1871 and L. grandidieri Forsyth Major, 1894, were both "Northwest Madagascar", the proper name of one or two of the new species from the region (sahamalazensis, grewcockorum, mittermeieri, tymerlachsonorum) could be either of these two. The true "dorsalis", as such, had not been identified, and no attempt has been made to identify grandidieri, formerly a junior synonym of dorsalis. Genetic analysis of the holotypes of dorsalis and grandidieri is needed to resolve this. Zinner et al. (2007) indicated, therefore, that tymerlachsonorum and/or mittermeieri might be junior synonyms.

The original Latin species name was incorrectly emended from the original description (Hoffmann et al. 2009) in the mistaken belief that it was named after a husband and wife team, whereas it is not anybody's name, but rather a compilation of different bits of names, hence it has no plural and should be used in the original singular form.

Tattersall (2007) has cautioned that the Lepilemur species reported by Louis et al. (2006), all diagnosed exclusively on genetic distance and all allopatric, be treated with extreme caution until supporting data are forthcoming.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(i,iii,v) ver 3.1
Year Published: 2014
Date Assessed: 2012-07-11
Assessor(s): Andriaholinirina, N., Baden, A., Blanco, M., Chikhi, L., Cooke, A., Davies, N., Dolch, R., Donati, G., Ganzhorn, J., Golden, C., Groeneveld, L.F., Hapke, A., Irwin, M., Johnson, S., Kappeler, P., King, T., Lewis, R., Louis, E.E., Markolf, M., Mass, V., Mittermeier, R.A., Nichols, R., Patel, E., Rabarivola, C.J., Raharivololona, B., Rajaobelina, S., Rakotoarisoa, G., Rakotomanga, B., Rakotonanahary, J., Rakotondrainibe, H., Rakotondratsimba, G., Rakotondratsimba, M., Rakotonirina, L., Ralainasolo, F.B., Ralison, J., Ramahaleo, T., Ranaivoarisoa, J.F., Randrianahaleo, S.I., Randrianambinina, B., Randrianarimanana, L., Randrianasolo, H., Randriatahina, G., Rasamimananana, H., Rasolofoharivelo, T., Rasoloharijaona, S., Ratelolahy, F., Ratsimbazafy, J., Ratsimbazafy, N., Razafindraibe, H., Razafindramanana, J., Rowe, N., Salmona, J., Seiler, M., Volampeno, S., Wright, P., Youssouf, J., Zaonarivelo, J. & Zaramody, A.
Reviewer(s): Schwitzer, C. & Molur, S.
Facilitator/Compiler(s): Chiozza, F. & Webber , A.
Justification:
The extent of occurrence (EOO) of L. tymerlachsoni covers less than 75 km2. This geographic range is severely fragmented and undergoing continuing decline in area, extent and quality of habitat. The number of mature individuals is also known to be in decline. Based on these premises, the species is listed as Critically Endangered.
History:
2008 Data Deficient

Geographic Range [top]

Range Description: This species is found in northwestern Madagascar, confined to the Lokobe region on the island of Nosy Bé. This may or may not be the species that formerly occurred on the island of Nosy Komba as well, but in any case sportive lemurs have not been observed there in recent years (Mittermeier et al. 2010). Zinner et al. (2007) found that some specimens from the mainland were identical in mtDNA to the type of tymerlachsoni. The extent of occurrence (EOO) is highly restricted, estimated to be less than 75 km2.
Countries:
Native:
Madagascar
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Population numbers are in decline due to habitat loss.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species inhabits primary and secondary tropical moist lowland forests that are subject to a dry season each year. It appears to be more common in secondary forest. In dense primary forest this species favours tree holes for sleeping, but will seek out vegetation tangles in more open deciduous forest. It feeds on leaves, fruit, and bark. Births occur from August through November, mothers typically producing a single young. Predators include the Madagascar Harrier-hawk and the Madagascar Buzzard (Mittermeier et al. 2010 and references therein).  


Systems: Terrestrial

Use and Trade [top]

Use and Trade: Individuals are caught by locals for illegal sale to tourists.

Threats [top]

Major Threat(s):

This species is threatened by habitat loss and degradation from unsustainable agricultural practices, as well as unsustainable levels of hunting. 

Conservation Actions [top]

Conservation Actions: Listed on CITES Appendix I. In areas where logging has reduced the availability of sleeping sites, researchers have provided nesting boxes. Individuals are still frequently caught by locals for illegal sale to tourists. The only protected area in which it occurs is the Lokobe Strict Nature Reserve. Present in Lokobe National Park. Further work is now urgently needed to clarify the distribution and taxonomic limits of the recently described Lepilemur species.

Citation: Andriaholinirina, N., Baden, A., Blanco, M., Chikhi, L., Cooke, A., Davies, N., Dolch, R., Donati, G., Ganzhorn, J., Golden, C., Groeneveld, L.F., Hapke, A., Irwin, M., Johnson, S., Kappeler, P., King, T., Lewis, R., Louis, E.E., Markolf, M., Mass, V., Mittermeier, R.A., Nichols, R., Patel, E., Rabarivola, C.J., Raharivololona, B., Rajaobelina, S., Rakotoarisoa, G., Rakotomanga, B., Rakotonanahary, J., Rakotondrainibe, H., Rakotondratsimba, G., Rakotondratsimba, M., Rakotonirina, L., Ralainasolo, F.B., Ralison, J., Ramahaleo, T., Ranaivoarisoa, J.F., Randrianahaleo, S.I., Randrianambinina, B., Randrianarimanana, L., Randrianasolo, H., Randriatahina, G., Rasamimananana, H., Rasolofoharivelo, T., Rasoloharijaona, S., Ratelolahy, F., Ratsimbazafy, J., Ratsimbazafy, N., Razafindraibe, H., Razafindramanana, J., Rowe, N., Salmona, J., Seiler, M., Volampeno, S., Wright, P., Youssouf, J., Zaonarivelo, J. & Zaramody, A. 2014. Lepilemur tymerlachsoni. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 02 September 2014.
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