''Myersophis'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

snake Snakes are elongated, Limbless vertebrate, limbless, carnivore, carnivorous reptiles of the suborder Serpentes . Like all other Squamata, squamates, snakes are ectothermic, amniote vertebrates covered in overlapping Scale (zoology), scales. Ma ...

in the family Cyclocoridae. It contains only one species, ''Myersophis alpestris'' or Myers' mountain snake, which is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

. It is only known from two specimens collected near

Banaue Banaue (or alternatively spelled as Banawe), officially the Municipality of Banaue is a 4th class municipality in the province of Ifugao, Philippines. According to the 2020 census, it has a population of 20,652 people. It is widely known as t ...

from

Mountain Province Mountain Province is a landlocked province of the Philippines in the Cordillera Administrative Region in Luzon. Its capital is Bontoc. Mountain Province was formerly referred to as ''Mountain'' in some foreign references. The name is usually short ...

in northern

Luzon Luzon (; ) is the largest and most populous island in the Philippines. Located in the northern portion of the Philippines archipelago, it is the economic and political center of the nation, being home to the country's capital city, Manila, as ...

. Both were collected at above sea level. Nothing else is known about this species, such as its habitat, and the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ...

has since been lost. A 2017 phylogenetic study found ''Myersophis'' to be the sister group to the genus '' Oxyrhabdium'' (both genera having diverged during the

Oligocene The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the ...

), and assigned both, alongside some other Philippine endemic snake genera, to the new subfamily Cyclocorinae. Later studies uplifted Cyclocorinae to being its own family, Cyclocoridae.

References

Cyclocoridae Monotypic snake genera Reptiles of the Philippines Endemic fauna of the Philippines Fauna of Luzon Taxa named by Edward Harrison Taylor {{Taxonbar, from=Q3331352