Lepilemur tymerlachsonorum


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Lepilemur tymerlachsonorum
Species Authority: Louis Jr., Engberg, Lei, Geng, Sommer, Randriamampionona, Randriamanana, Zaonarivelo <i>et al</i>., 2006
Common Name/s:
English Nosy Be Sportive Lemur, Hawks' Sportive Lemur
Lepilemur tymerlachsoni Louis Jr., Engberg, Lei, Geng, Sommer, Randriamampionona, Randriamanana, Zaonarivelo et al., 2006
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 north-west 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 is here emended from the original description following Hoffmann et al. (2009).

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: Data Deficient ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor/s: Hoffmann, M.
Reviewer/s: Mittermeier, R.A. & Rylands, A.B. (Primate Red List Authority)
Listed as Data Deficient as this species is only recently described, its taxonomic status is unclear relative to other recently described lemurs in northwest Madagascar, and further information is required to determine its limits of distribution, population status and threats. If it is indeed shown to be a valid form confined to Nosy Be, then this species will almost certainly warrant listing in a threatened category.

Geographic Range [top]

Range Description: Confined to the Lokobe region on the island of Nosy Bé, where currently known only from the type locality of Lokobe National Park (Louis et al. 2006). Zinner et al. (2007) found that some specimens from the mainland were identical in mtDNA to the type of tymerlachsonorum. 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. 2008).
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no information on the population status of this species. One of 15 new species of Lepilemur described in 2006.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Recorded from humid forest habitats on the island of Nosy Be.
Systems: Terrestrial

Threats [top]

Major Threat(s): Unknown. The type locality is currently a protected area.

Conservation Actions [top]

Conservation Actions: Listed on CITES Appendix I. 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: Hoffmann, M. 2008. Lepilemur tymerlachsonorum. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 19 April 2014.
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