''Euparkerella'', sometimes known as Guanabara frogs, is a genus 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 ...

s in the family

Strabomantidae The Strabomantidae, sometimes called cloud forest landfrogs, are a family of frogs native to South America. These frogs lack a free-living larval stage and hatch directly into miniature "froglets". This family includes '' Pristimantis'', the mo ...

. They are

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 Atlantic coastal forests in the south-eastern Brazilian states of

Espírito Santo Espírito Santo (; ) is a state in southeastern Brazil. Its capital is Vitória, and its largest city is Serra. With an extensive coastline, the state hosts some of the country's main ports, and its beaches are significant tourist attracti ...

and

Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...

. The name ''Euparkerella'' honours H. W. Parker, a

herpetologist Herpetology (from Ancient Greek ἑρπετόν ''herpetón'', meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (in ...

who named the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

, with the Greek prefix ''eu'' meaning true and suffix ''ella'', a diminutive form.

Taxonomy

Species of ''Euparkerella'' are traditionally distinguished using morphological traits. However, these species do not align well with genetically distinct units, with the latter suggesting higher diversity than the former, especially within '' Euparkerella brasiliensis'' and '' Euparkerella cochranae''. It remains unresolved whether the genetically distinct units qualify as different species.

Description

Species of ''Euparkerella'' are small frogs, growing to

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 ...

at most. The digits are extremely reduced, compared to those of their larger relatives. Head is narrower than the body. Differentiated

tympanic membrane In the anatomy of humans and various other tetrapods, the eardrum, also called the tympanic membrane or myringa, is a thin, cone-shaped membrane that separates the external ear from the middle ear. Its function is to transmit changes in pressur ...

and tympanic annulus are absent. Dorsum is finely granular. Venter is areolate.

Species

The following species are recognized in the genus ''Euparkerella'': * '' Euparkerella brasiliensis'' (Parker, 1926) * '' Euparkerella cochranae'' Izecksohn, 1988 * '' Euparkerella cryptica'' Hepp, Carvalho-e-Silva, Carvalho-e-Silva, and Folly, 2015 * ''

Euparkerella robusta ''Euparkerella robusta'' is a species of frog in the family Strabomantidae. It is Endemism, endemic to the state of Espírito Santo in southeastern Brazil. It has been recorded from the municipality of Mimoso do Sul (Type locality (biology), type ...

'' Izecksohn, 1988 * '' Euparkerella tridactyla'' Izecksohn, 1988

References

{{taxonbar, from=Q547290 Strabomantidae Amphibian genera Amphibians of the Atlantic Forest Endemic frogs of Brazil