''Sarcohyla labeculata'' is a species of

frog A frog is any member of a diverse and largely semiaquatic group of short-bodied, tailless amphibian vertebrates composing the order (biology), order Anura (coming from the Ancient Greek , literally 'without tail'). Frog species with rough ski ...

in the family

Hylidae Hylidae is a wide-ranging family of frogs commonly referred to as " tree frogs and their allies". However, the hylids include a diversity of frog species, many of which do not live in trees, but are terrestrial or semiaquatic. Taxonomy and ...

. It is

endemic Endemism is the state of a species being found only 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 foun ...

to the

Sierra Mixe The Sierra Mixe or Mixes District is a district in the east of the Sierra Norte Region of the Mexican state of Oaxaca. It comprises 17 municipalities A municipality is usually a single administrative division having municipal corporation, corp ...

Oaxaca Oaxaca, officially the Free and Sovereign State of Oaxaca, is one of the 32 states that compose the political divisions of Mexico, Federative Entities of the Mexico, United Mexican States. It is divided into municipalities of Oaxaca, 570 munici ...

, Mexico. This species was resurrected from

synonymy A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...

of ''

Sarcohyla bistincta ''Sarcohyla bistincta'', also known as the Mexican fringe-limbed treefrog or Cope's streamside treefrog, is a species of frog in the family Hylidae. It is endemic to Mexico; it is widespread and occurs from southern Sinaloa and Durango southeastw ...

'' in 2018, while at the same time bringing ''Sarcohyla calthula'' and ''Sarcohyla ephemera'' in its synonymy. Common name Mixe streamside treefrog has been proposed for this species, whereas the common names yellow-robed treefrog and Cerro Las Flores spikethumb frog referred to the former ''S. calthula'' and ''S. ephemera'', respectively.

Description

Males can grow to and females to in

snout–vent length Snout–vent length (SVL) is a morphometric measurement taken in herpetology from the tip of the snout to the most posterior opening of the cloacal slit (vent)."direct line distance from tip of snout to posterior margin of vent" It is the mos ...

. The snout is short and bluntly rounded in dorsal profile but truncate in lateral profile. The tympanum is distinct but its upper edge is obscured by the supratympanic fold. The fingers are long and slender and bear moderately large discs; only vestigial webbing is present. The toes are moderately long and slender and bear discs that are almost as large as the finger ones. The toes are partially webbed. In males the upper parts have yellowish tan coloration. There are often small black markings on posterior of the dorsum. A black stripe runs from the snout through the loreal region and eye along the supratympanic fold to the forelimb insertion, thence onto the flank and to the groin; the dark flank marking is usually continuous but sometimes interrupted posteriorly or consisting of elongate, horizontal blotches. The ventral surfaces are mostly cream, often with coarse dark vermiculations on the throat and the chest. The

iris Iris most often refers to: *Iris (anatomy), part of the eye * Iris (color), an ambiguous color term *Iris (mythology), a Greek goddess * ''Iris'' (plant), a genus of flowering plants * Iris (given name), a feminine given name, and a list of peopl ...

is gold, pale copper, or bronze and has black reticulations.

Habitat and conservation

''Sarcohyla labeculata'' occurs along small streams and seeps in cloud forest and secondary growth at elevations of

above sea level Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level ...

. This species is known from only very few locations and is threatened by forest clearance and logging for small-scale agriculture and residential development.

Chytridiomycosis Chytridiomycosis ( ) is an infectious disease in amphibians, caused by the chytrid fungi '' Batrachochytrium dendrobatidis'' and '' Batrachochytrium salamandrivorans''. Chytridiomycosis has been linked to dramatic population declines or extinc ...

might also be a threat, as suggested by tadpoles with deformed or missing mouthparts in one population.

References

{{Taxonbar, from1=Q106541875, from2=Q535992 labeculata Frogs of North America Endemic amphibians of Mexico Fauna of the Sierra Madre de Oaxaca Amphibians described in 1951 Taxa named by Frederick A. Shannon Taxonomy articles created by Polbot