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Ansonia longidigita

Ansonia longidigita, also known as the long-fingered slender toad or long-fingered stream toad, is a species of toad endemic to the island of Borneo. Its specific name, "longidigita," highlights its most distinctive feature: unusually long and slender fingers, particularly in males. This toad inhabits mid-elevation forests, favoring areas near clear, rocky streams where it breeds.

Key Facts

  • The species is named for its long, slender fingers, especially prominent in males.
  • Adult males typically range from 40-50 MM in snout-to-vent length, while females can reach up to 70 MM.
  • Ansonia longidigita inhabits MID-elevation forests in Sabah and Sarawak (Malaysia) and Brunei.
  • They are found on the forest floor or in low vegetation and breed in small, clear streams with rocky bottoms.
  • Threats to the species include habitat loss due to logging and resulting stream siltation.
  • Tadpoles are small, usually under 15 MM, and display dark blotches on a cream background.
Ansonia longidigita
Scientific Name
Ansonia longidigita
Family
Bufonidae
Common Names

Long-Fingered Slender Toad, Long-Fingered Stream Toad

Description
Ansonia longidigita is a slender toad with a distinctive feature: its long and slender fingers, particularly noticeable in males. The males typically measure between 40–50 mm and females can grow up to 70 mm in snout-to-vent length. The dorsal skin is characterized by numerous small, round warts, and the tympanum is distinct. Its tadpoles are very small, usually less than 15 mm, and are marked with dark blotches on a cream-colored background.
Habitat Description
This species inhabits mid-elevation hills within the forests of northern and western Borneo. Adults are found on the forest floor or low within the vegetation. Their breeding grounds are specifically small, clear brooks and streams that have rocky bottoms. Males often call from these stream boulders or from nearby vegetation.
Breeding Behavior
Ansonia longidigita breeds in small, clear brooks and streams with rocky bottoms. Males are known to call from stream boulders or from vegetation adjacent to the stream, likely to attract mates.
Vocalization
Males call from the stream boulders or from vegetation by the stream, suggesting vocalizations are used in breeding or territorial behavior.
Size Range Mm
40-70 mm
Habitat Type

Forest, Streams, Mid-Elevation Hills

Distribution States

Sabah, Sarawak, Brunei

Distinguishing Features

Long and Slender Fingers, Especially In Males, Slender Habitus, Distinct Tympanum, Dorsal Skin With Numerous Small, Round Warts

About Ansonia longidigita

Ansonia longidigita: The Long-Fingered Stream Toad

Ansonia longidigita, commonly known as the long-fingered slender toad or long-fingered stream toad, is a species of toad native to the island of Borneo. Its name, "longidigita," directly refers to its most prominent characteristic: the unusually long and slender fingers, particularly evident in the males of the species.

Description and Characteristics

The physical appearance of Ansonia longidigita is marked by its slender build. Adult males typically measure between 40 and 50 millimeters in snout-to-vent length, while females can reach a larger size, up to 70 millimeters. The toad's dorsal skin is covered with numerous small, round warts, and it possesses a distinct tympanum. The tadpoles of this species are notably small, generally under 15 millimeters, and are distinguished by dark blotches set against a cream-colored background.

Habitat and Distribution

This species is endemic to the mid-elevation hills of northern and western Borneo, specifically found in the Malaysian states of Sabah and Sarawak, as well as in Brunei. Ansonia longidigita adults typically reside on the forest floor or in the lower strata of vegetation. Their breeding activities are closely tied to their specific habitat requirements: small, clear brooks and streams characterized by rocky bottoms.

Breeding Behavior

The breeding cycle of Ansonia longidigita occurs in these small, clear streams. Males are known to vocalize from the stream boulders or from the surrounding vegetation, likely to attract females and establish territories during the breeding season.

Conservation Concerns

Ansonia longidigita faces significant threats primarily due to habitat loss stemming from logging activities. The deforestation associated with logging also leads to the siltation of the streams that are crucial for the species' reproduction, further endangering their populations. Specific details regarding their diet, lifespan, and predators are not detailed in available records.

Source: Wikipedia ↗

Frequently Asked Questions

What does the scientific name Ansonia longidigita mean?

The specific name "longidigita" is derived from Latin and translates to "long-fingered." This name refers to the characteristic long and slender fingers of this toad species, which are particularly noticeable in males.

What are the common names for Ansonia longidigita?

Ansonia longidigita is commonly known as the long-fingered slender toad or the long-fingered stream toad. These names reflect its physical appearance and its preferred habitat.

Where is Ansonia longidigita found?

This species is endemic to the island of Borneo. It can be found in the Malaysian states of Sabah and Sarawak, as well as in Brunei.

What kind of habitat does Ansonia longidigita prefer?

Ansonia longidigita inhabits mid-elevation hills. Adults are typically found on the forest floor or in low vegetation, and they breed in small, clear brooks and streams with rocky bottoms.

What are the main threats to Ansonia longidigita?

The primary threats to this species are habitat loss caused by logging activities. Logging also leads to the siltation of the streams that the toads rely on for breeding.