Notes on Recently Described Taxa

Zinner et al. (2007) examined conflicting results conclusions in the genetic analysis of sportive lemurs in northwest 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, grewcocki, mittermeieri, tymlerachsoni) 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 synomym of dorsalis. Genetic analyis of the holytpes of dorsalis and grandidieri is needed to resolve this. Zinner et al. (2007) indicated, therefore, that tymerlachsoni and/or mittermeieri might be junior synonyms. They also indicated that L. manasamody Craul et al., 2007 is probably a junior synonym of L. grewcocki Louis Jr. et al. 2006—sampling sites were less than 2 km apart, with no evident geographic barrier—but “further testing is necessary”. Under any circumstances, Zinner et al. (2007) concluded that “the number of species in NW Madagascar is rather less than it had seemed to be as of May, 2007.”

²Brandon-Jones (2005) reported that “Wangchuk et al. (2003) had described and published photographs of a population they recognized as a new subspecies of golden leaf monkey from Bhutan. Under the stricter criteria of availability introduced in the latest (fourth) edition of the International Code of Zoological Nomenclature (1999), Article 16.1 insists that every new name published after 1999 must explicitly be indicated as intentionally new. Wangchuk et al. (2003) failed to satisfy this requirement as they treated the subspecific name as available from an unpublished report (Wangchuk, 2003). T[rachypithecus] g[eei] bhutanensis is therefore a nomen nudum. Unless or until it is properly published, it should be cited in a publication only as an unavailable junior synonym of T. geei or T. pileatus. Authors who recognize the subspecies should consider it nameless. Tom Gnoske (personal communication) told me that the capped leaf monkey has apparently entered territory formerly exclusive to T. geei by crossing a man-made bridge, constructed in about 1980 over the Manas River in east Bhutan. The alleged new subspecies requires confirmation as it may only constitute a resulting hybrid population” (p.1). See also Choudhury (2008).