Chiasmocleis is a genus of microhylid frogs. They are found in tropical South America north and east of the Andes. Their common name is humming frogs or silent frogs, the latter referring to the formerly recognized Syncope.
Frostius pernambucensis, or the Frost's toad, is a species of toad in the family Bufonidae. It is endemic to the eastern Brazil where it is known from the Paraíba, Pernambuco, Alagoas, and eastern Bahia states.
Aplastodiscus sibilatus is a species of frog in the family Hylidae. It is endemic to northeastern Brazil and is known from central-eastern Bahia and Alagoas. The specific name sibilatus is derived from the Latin sibilus meaning "whistle", in allusion to the characteristic call of the species.
Boana beckeri is a species of frog in the family Hylidae. It is endemic to Brazil and is only known from a handful of localities in southern Minas Gerais and adjacent northeastern São Paulo. The specific name beckeri honors Johann Becker, Brazilian zoologist who collected many of the types.
Boana latistriata is a species of frog in the family Hylidae. It is endemic to Brazil and only known from its type locality, Itatiaia National Park, and from Marmelópolis, both in the state of Minas Gerais. The specific name latistriata refers to the wide stripes on the back of this frog.
Physalaemus erikae is a species of frog in the family Leptodactylidae. It is endemic to eastern Brazil and currently known only from southern Bahia, although it is likely that its range extends into nearby areas in northeastern Minas Gerais and northern Espírito Santo with similar vegetation.
Proceratophrys concavitympanum is a species of frog in the family Odontophrynidae. It is endemic to Brazil and known from Rondônia, northwestern Mato Grosso, Pará, and Tocantins. It is the only Proceratophrys found in the Amazon rainforest.
Proceratophrys schirchi is a species of frog in the family Odontophrynidae. It is endemic to eastern Brazil and occurs in southeastern Bahia, Espírito Santo, northeastern Minas Gerais, and Rio de Janeiro states. The specific name schirchi honours Paulo F. Schirch, a Brazilian zoologist who collected the type series. Common names Santo smooth horned frog and Brazilian smooth horned frog can refer to this species, the latter specifically referring to Proceratophrys precrenulata that is now considered a junior synonym only.
Chiasmocleis alagoana is a species of frogs in the family Microhylidae. It is endemic to remnants of the Atlantic rainforest in the states of Alagoas, Paraíba, and Pernambuco in north-eastern Brazil. The specific name alagoana refers to Alagoas, the state where this species was first found.
Chiasmocleis anatipes is a species of frog in the family Microhylidae. As currently known, it is endemic to northeastern Ecuador, but it is likely to occur also in adjacent parts of Peru and perhaps Colombia too. The specific name anatipes refers to the "duck-like" feet of this frog, characterized by extensive webbing between the toes. Common name Santa Cecilia humming frog has been proposed for this species.
Chiasmocleis bassleri is a species of frog in the family Microhylidae. It is found in the Amazon biome of Brazil, Colombia, Ecuador, Peru, and Bolivia. The specific name bassleri honors Harvey Bassler, an American geologist and paleontologist. Common name Bassler's humming frog has been proposed for this species.
Chiasmocleis crucis is a species of frog in the family Microhylidae. It is endemic to Bahia in eastern Brazil. It is known from Camamu, its type locality, and from the Serra Bonita Private Reserve of Natural Heritage in Camacan/Pau Brasil. The specific name crucis honors Carlos Alberto Gonçalves da Cruz, a Brazilian herpetologist.
Chiasmocleis hudsoni, also known as Hudson's humming frog, is a species of frog in the family Microhylidae. It is found in French Guiana, Suriname, Guyana, Guianan Venezuela, Colombia (Amazonas), and Amazonian Brazil. Chiasmocleis jimi has been included in this species but the most recent genetic analyses support its recognition as a distinct species; both species might include further distinct lineages that warrant recognition as species.
Stereocyclops histrio is a species of frog in the family Microhylidae. It is endemic to the northeastern Bahia state of Brazil where it occurs in remnants of the Atlantic forest. After the holotype was collected in 1944, the species went unrecorded until a population was found in the Una Biological Reserve and its surroundings in 1999. It is now known from four locations. Common name Bahia yellow frog has been coined for it, perhaps in reference to the bright lemon yellow coloration of the holotype. It was the only species in the genus Hyophryne until 2012 when molecular data demonstrated that it is nested within Stereocyclops species.
Myersiella is a genus of frogs in the family Microhylidae. It is monotypic, being represented by the single species, Myersiella microps. It is endemic to southeastern Brazil and occurs in Espírito Santo, Rio de Janeiro, southeastern Minas Gerais, and southeastern São Paulo state. The genus name honors George S. Myers. The genus is sometimes known as the elongated frogs, while the sole species is known as Rio elongated frog.
Stereocyclops incrassatus is a species of frog in the family Microhylidae. It is endemic to eastern Brazil and is known from Pernambuco and Alagoas in the north and then southward through Bahia to Minas Gerais and Espírito Santo. Earlier records from São Paulo state are now recognized as Stereocyclops parkeri. Common name Brazilian dumpy frog has been coined for this species.
Adelophryne mucronatus is a species of frog in the family Eleutherodactylidae. It is endemic to the coastal areas of the Bahia state in eastern Brazil; it is known from the municipalities of Itacaré, Ilhéus, and Una. The specific name mucronatus is derived from Latin and means "pointed", referring to the pointed fingers tips of this frog.
Nyctimantis arapapa, also known as Bahia's broad-snout casque-headed tree frog, is a species of frog endemic to the Atlantic Rainforest of southern Bahia, Brazil. The frogs of the genus Nyctimantis are distinguished by a bony plate on top of their heads, referred to as "casque-headed". Casque-headed frogs are characterized by their phragmotic behavior. N. arapapa is further characterized by the long bill-shaped "snout" they possess, similar to that of Triprion petasatus, a head longer than it is wide, and their small size. This species, and all species of Nyctimantis, use their unique head shape to seal off the leaves of bromeliads, the plant they inhabit solely. This has two known purposes: warding off predators from the frog as well as their young, and trapping moisture.
Carlos Alberto Gonçalves da Cruz is a Brazilian herpetologist. He works at the National Museum in Rio de Janeiro.
Kalophrynus yongi is a species of frog in the family Microhylidae, also known as the Cameron Highland sticky frog. It is endemic to Peninsular Malaysia and is only known from its type locality near the top of Gunung Brinchang, in the Cameron Highlands, Pahang state. The specific name yongi honours Dr. Yong Hoi-Sen, a zoologist from the University of Malaya.
