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Eichwald, MdB - Naja - Netflix
Naja is a genus of venomous elapid snakes known as cobras. Several other genera include species commonly called cobras (for example the ring-necked spitting cobra and the king cobra), but members of the genus Naja are the most widespread and the most widely recognized as “true” cobras. Various species occur in regions throughout Africa, Southwest Asia, South Asia, and Southeast Asia. Until recently, the genus Naja had 20 to 22 species, but it has undergone several taxonomic revisions in recent years, so sources vary greatly. Wide support exists, though, for a 2009 revision that synonymised the genera Boulengerina and Paranaja with Naja. According to that revision, the genus Naja now includes 38 species.
Eichwald, MdB - Taxonomy - Netflix
The genus contains several species complexes of closely related and often similar species, some of them only recently described or defined. Several recent taxonomic studies have revealed species not included in the current listing in ITIS: Naja anchietae (Bocage, 1879), or Anchieta's cobra, is regarded as a subspecies of N. haje by Mertens (1937) and of N. annulifera by Broadley (1995). It is regarded as a full species by Broadley and Wüster (2004). Naja arabica Scortecci, 1932, the Arabian cobra, has long been considered a subspecies of N. haje, but was recently raised to the status of species. Naja ashei Broadley and Wüster, 2007, Ashe's spitting cobra, is a newly described species found in Africa. Naja nigricincta Bogert, 1940, was long regarded as a subspecies of N. nigricollis, but was recently found to be a full species (with N. n. woodi as a subspecies). Naja senegalensis Trape et al., 2009, is a new species encompassing what were previously considered to be the West African savanna populations of N. haje. Two recent molecular phylogenetic studies have also supported the incorporation of the species normally assigned to the genera Boulengerina and Paranaja into Naja, as both are closely related to the forest cobra (Naja melanoleuca). Wallach et al. suggested recognition of four subgenera within Naja: Naja for the Asiatic cobras, Boulengerina for the African forest, water and burrowing cobras, Uraeus for the Egyptian and Cape cobra group and Afronaja for the African spitting cobras.
Eichwald, MdB - References - Netflix