''Callulops robustus'' (commonly known as Boulenger's callulops frog or robust frog) 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

Microhylidae The Microhylidae, commonly known as narrow-mouthed frogs, are a geographically widespread family (biology), family of frogs. The 683 species are in 57 genera and 11 subfamilies. Evolution A molecular phylogenetic study by van der Meijden, et al. ...

. It has traditionally been considered as wide-ranging species found in both

Western New Guinea Western New Guinea, also known as Papua, Indonesian New Guinea, and Indonesian Papua, is the western half of the island of New Guinea, formerly Dutch and granted to Indonesia in 1962. Given the island is alternatively named Papua, the region ...

(

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

) and

Papua New Guinea Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean n ...

. However, it is likely that specimens from the type locality,

Misima Island Misima (formerly called St. Aignan) is a volcanic island in the northwest of Louisiade Archipelago within Milne Bay Province of Papua New Guinea. History Misima Island was inhabited by Austronesians since about 1500 BC. The island was si ...

, and New Guinea represent different species. If so, name ''Callulops robustus'' belongs to the Misima Island species, and the mainland species is unnamed. Other island populations may or may not belong to ''Callulops robustus''. ''

Callulops microtis ''Callulops'' is a genus of microhylid frogs from Sulawesi as well as the New Guinea region, from Talaud Islands and the Maluku Islands (Moluccas) in the northwest to the Louisiade Archipelago The Louisiade Archipelago is a string of ten larg ...

'' from the mainland has already been removed from synonymy with ''Callulops robustus''.

Description

''Callulops robustus'' are moderately large frogs: males grow to a snout–vent length of and females to . Snout is long. Adults are reddish-brown or grey brown above. Chin, chest, and under limbs are dark purple brown. Colouration in juveniles is quite different: with black head and limbs, brick-red dorsum and sides, with scattered minute blue-white flecks.

Habitat and conservation

''Callulops robustus'' is widespread species (see, however, the caveat on species identity) but occurs at relatively low densities. It occurs in lowland and hill rainforests and also in modified or disturbed habitats (degraded forests and forest edges, rural gardens, and near landslides) at elevations of up to asl. It burrows in the forest floor and breeds by direct development. There are no significant threats to this species.

References

{{Taxonbar, from=Q2699212

robustus Robustus, robust in Latin, may refer to: * '' Atheris squamiger robustus'', a subspecies in the species ''Atheris squamigera'', the green bush viper, variable bush viper or leaf viper, a viper species found in west and central Africa * '' Cebus ni ...

Amphibians of Western New Guinea Amphibians of Papua New Guinea Amphibians described in 1898 Taxa named by George Albert Boulenger Taxonomy articles created by Polbot