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Aplastodiscus arildae

Aplastodiscus arildae is a frog species endemic to southeastern Brazil, found in mountainous regions like the Serra do Mar and Serra da Mantiqueira. It is distinguished by its slender, green coloration with a distinctive yellowish line along its head and its varied vocalizations, including advertisement, courtship, and territorial calls.

Key Facts

  • Endemic to southeastern Brazil, inhabiting mountainous forest regions.
  • Males typically range from 34-38 MM snout-to-vent length, with females slightly larger.
  • Features a slender body, green coloration, and a prominent yellowish line from the canthus rostralis.
  • Possesses three distinct call types: advertisement, courtship, and territorial.
  • Breeds in permanent streams where tadpoles develop.
  • Considered very common but dependent on forest habitats.
Aplastodiscus arildae
Scientific Name
Aplastodiscus arildae
Family
Hylidae
Description
Aplastodiscus arildae is a slender frog species, with adult males typically measuring between 34-38 mm and females around 40 mm in snout-to-vent length. Its overall coloration is green, distinguished by a prominent, thick yellowish line that extends from the canthus rostralis, borders the upper eyelid, and continues over the supratympanic fold. The head is as wide as it is long, and the canthus rostralis and tympanum are distinct. Its fingers and toes are partially webbed and equipped with terminal adhesive discs.
Habitat Description
This species inhabits primary and secondary forests, typically found at elevations ranging from 800 to 1,500 meters above sea level. Males predominantly call from elevated positions within the forest canopy or from the streamside vegetation. Breeding activities and the subsequent development of tadpoles take place in permanent streams.
Breeding Behavior
Breeding for Aplastodiscus arildae takes place in permanent streams, which also serve as the habitat for tadpole development. Males also produce courtship calls, which are similar to advertisement calls but emitted at a higher rate.
Vocalization
Aplastodiscus arildae exhibits three distinct call types: advertisement, courtship, and territorial. The advertisement call can be a single note with harmonics, varying in frequency and rate depending on the locality. Courtship calls are similar to advertisement calls but produced more frequently, while territorial calls consist of three to four notes and can be triggered by playback of male advertisement calls.
Size Range Mm
34-42
Habitat Type

Primary Forests, Secondary Forests, Streamside Vegetation

Distribution States

Brazil

Distinguishing Features
  • Slender Body
  • Green Coloration
  • Thick Yellowish Line From Canthus Rostralis To Over Supratympanic Fold

About Aplastodiscus arildae

Aplastodiscus arildae is a species of frog endemic to the southeastern region of Brazil. It is found in several mountainous areas, including the Serra do Mar, Serra da Mantiqueira, Serra do Espinhaço, and Serra do Japi. The specific epithet 'arildae' honors Arilda M. G. da Cruz, the wife of one of its discoverers.

Description and Appearance

This frog is characterized by its slender build. Adult males typically measure between 34 and 38 mm in snout-to-vent length, while a single recorded female measured 40 mm. Larger males, reaching 41-42 mm, have also been noted near the original discovery location. Its overall color is green. A distinctive feature is a thick yellowish line that runs from the canthus rostralis, along the edge of the upper eyelid, and extends over the supratympanic fold. The head is as wide as it is long, with a distinct canthus rostralis and tympanum. The fingers and toes are partially webbed and possess terminal adhesive discs.

Habitat and Ecology

Aplastodiscus arildae inhabits both primary and secondary forests at elevations ranging from 800 to 1,500 meters above sea level. Males are known to vocalize from high up in the forest canopy or from vegetation located near streams. The species is dependent on forest environments and is considered very common within its range, though land-use change poses a localized threat. Its tadpoles develop in permanent streams, where breeding also takes place.

Vocalizations

The species exhibits a complex vocal repertoire, including three distinct call types: advertisement, courtship, and territorial calls. The advertisement call in the Serra do Japi region is a single-note sound with two harmonics, emitted at a rate of approximately 41 calls per minute. Calls recorded near the type locality show variability in the number of harmonics. Courtship calls are similar to advertisement calls but are delivered at a higher frequency. Territorial calls consist of three to four notes and can be stimulated by playback of male advertisement calls, especially amidst significant vocal activity from other frogs.

Source: Wikipedia ↗

Frequently Asked Questions

What is the scientific name for this frog?

The scientific name for this frog is Aplastodiscus arildae. This binomial nomenclature follows the standard system for classifying species.

Where is Aplastodiscus arildae found?

Aplastodiscus arildae is found in southeastern Brazil. Its distribution includes mountainous areas such as the Serra do Mar, Serra da Mantiqueira, Serra do Espinhaço, and Serra do Japi.

What does Aplastodiscus arildae look like?

This frog is characterized by its slender appearance and green coloration. A notable feature is a thick yellowish line that runs from the canthus rostralis, along the edge of the upper eyelid, and over the supratympanic fold.

What are the different calls made by Aplastodiscus arildae?

Aplastodiscus arildae produces three types of calls: advertisement calls, courtship calls, and territorial calls. The advertisement call can be a single note with harmonics, while courtship calls are emitted at a higher rate, and territorial calls consist of three to four notes.

What is the habitat of Aplastodiscus arildae?

This species inhabits primary and secondary forests at elevations between 800 and 1,500 meters. Males are known to call from high in the forest canopy or from vegetation along streams.

How does Aplastodiscus arildae reproduce?

Breeding for Aplastodiscus arildae occurs in permanent streams. These streams also serve as the environment for the development of their tadpoles.