''Cycloramphus duseni'' is a species of frog in the family

Cycloramphidae The Cycloramphidae are a family of frogs endemic to southeastern Brazil. This family has seen large changes in its composition. Genera that have at some point been included in the Cycloramphidae are at present placed in the Alsodidae, Hylodidae ...

. It is endemic to southern Brazil and only known from its

type series In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the ...

collected in 1911 from near Casa Ypiranga (or Ipiranga) along the Curitiba– Paranaguá railway, in the Serra do Mar, Paraná state. Prior to

naming Naming is assigning a name to something. Naming may refer to: * Naming (parliamentary procedure), a procedure in certain parliamentary bodies * Naming ceremony, an event at which an infant is named * Product naming, the discipline of deciding wha ...

of ''

Cycloramphus izecksohni ''Cycloramphus izecksohni'' is a species of frog in the family Cycloramphidae. It is endemic to southern Brazil and occurs in the Serra do Mar in the states of Santa Catarina, Paraná, and São Paulo. Prior to its description in 1983, it ...

'' in 1983, it was confused with this species. The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

''duseni'' honors Per Dusén, Swedish naturalist who collected the type series. Common name Ypiranga button frog has been coined for this species.

Description

The type series consists of five specimens, two of which appear to be lost. Two male syntypes at the

Swedish Museum of Natural History The Swedish Museum of Natural History ( sv, Naturhistoriska riksmuseet, literally, the National Museum of Natural History), in Stockholm, is one of two major museums of natural history in Sweden, the other one being located in Gothenburg. The ...

measure in snout–vent length. The snout is sloping in profile. The toes have reduced webbing. The dorsum bears warts and tubercles; the large warts are sometimes arranged in regular rows. The posterior surface of the thigh has distinct light spots. The belly is yellowish dirty white, although it is unknown whether this refers to living or preserved specimens.

Habitat and conservation

The

was collected from crevices and cracks in the vertical cliffs at about

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

. As of 2004, later searches had failed to find the species again. Larval ecology is unknown, but if similar to other ''Cycloramphus'', the larvae live on rocks in the splash zones of streams in rocky areas in and around forest. ''Cycloramphus duseni'' might occur in the

Pico do Marumbi State Park The Pico do Marumbi State Park ( pt, Parque Estadual Pico do Marumbi) is a State park in the state of Paraná, Brazil. Location The Pico do Marumbi State Park is in the municipality of Morretes, Paraná. It has an area of . It may be reached fro ...

. Tourism is a potential threat to this species.

References

{{Taxonbar, from=Q2237534 duseni Endemic fauna of Brazil Amphibians of Brazil Amphibians described in 1914 Taxa named by Lars Gabriel Andersson Taxonomy articles created by Polbot