''Scythrophrys'' is a genus of

frog A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-frog" '' Triadobatrachus'' is ...

s in the family

Leptodactylidae The southern frogs form the Leptodactylidae, a name that comes from Greek meaning a bird or other animal having slender toes. They are a diverse family of frogs that most likely diverged from other hyloids during the Cretaceous. The family has u ...

. It is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

, being represented by the single species, ''Scythrophrys sawayae'', commonly known as the Banhado frog, after its

type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (disambiguation) * Locality (disambiguation) {{disambiguation ...

. It 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 els ...

Serra do Mar The Serra do Mar (, Portuguese for ''Sea's Ridge'' or ''Sea Ridge'') is a 1,500 km long system of mountain ranges and escarpments in Southeastern Brazil. Geography The Serra do Mar runs parallel to the Atlantic Ocean coast from the state ...

in Paraná and Santa Catarina states, south-eastern Brazil. Its natural

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

s are

secondary Secondary may refer to: Science and nature * Secondary emission, of particles ** Secondary electrons, electrons generated as ionization products * The secondary winding, or the electrical or electronic circuit connected to the secondary winding i ...

and

old growth An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance, and thereby exhibits unique ecological feature ...

forests; reproduction takes place in temporary pools. Its populations are scattered but it is locally common. It is threatened by

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

. This species was first described in 1953 by the American herpetologist

Doris Mable Cochran Doris Mable Cochran (May 18, 1898 – May 22, 1968) was an American herpetologist and custodian of the American Natural Collection at the Smithsonian Institution in Washington, D.C., for many years. Life Born in North Girard, Pennsylvania, she gr ...

whose research was focused on the herpetofauna of the West Indies and South America.

Description

The Banhado frog is a small, plump frog, growing to a length of about , with males being slightly smaller than females. The snout is pointed and there are pointed projections above the eyes. The limbs are slender and the digits bear small disc-shaped pads. There are three distinct colour forms; about 50% of individuals are dark brown, the rest being either green or light tan. The limbs are yellowish-brown, and there is a pale fold of skin separating the dorsal surface from the flanks.

Ecology

The Banhado frog lives among the leaf litter on the forest floor. When it is stationary it is difficult to discern among the dead leaves; the shape of its body and the variability of its colouring may make it more difficult for a potential predator to learn to recognise it as prey. When disturbed, it adopts a defensive posture, thrusting its limbs stiffly outwards, thereby making itself appear larger than it actually is. In this posture and in its resemblance to a dead leaf, it is similar to ''

Proceratophrys boiei ''Proceratophrys boiei'', commonly known as Boie's frog, is a species of frog in the family Odontophrynidae. It is endemic to eastern and southeastern Brazil. This common frog is found in primary and secondary forest, on the forest edge, and in ...

'', another frog found on the floor of Brazil's rain forests.

Status

The Banhado frog is

to the

, a series of mountain ranges in southeastern Brazil, in the states of Paraná and Santa Catarina. Its typical habitat is virgin or secondary growth forest at altitudes of between . It has a somewhat limited range, with an area of occupancy of probably less than and it is common in suitable habitat. Although it does not occur in any protected areas, the forests in which it lives are relatively undisturbed, and any decrease in populations is likely to be at too slow a rate to be sufficient to classify it in a more threatened category, so the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natur ...

has rated its conservation status as being of "

least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. Th ...

References

{{Taxonbar, from1=Q10819208, from2=Q1594227 Leptodactylidae Monotypic amphibian genera Amphibians of Brazil Endemic fauna of Brazil Taxa named by John Douglas Lynch Taxonomy articles created by Polbot