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Hypsiboas crepitans Wied-Neuwied 1824

Least Concern (IUCN 3.1)
Hypsiboas crepitans
Male Hypsiboas crepitans frog

Common name

Rattle-voiced Treefrog, Emerald-eyed Treefrog



Species description based on Ibanez et al (1999) and Duellman (2001). A large treefrog with long, slender arms and legs (males to 59 mm, females to 68 mm). Males have a dagger-like spine at the base of the thumb.

Hypsiboas crepitans Adult 1


The dorsal surface pinkish tan with some darker brown spots, blotches or other markings. A thin, dark middorsal stripe is usually present. Dark bars are present on the upper surfaces of the thighs, and extend onto the rear surfaces of the thighs.

Hypsiboas crepitans Dorsal 1


The ventral surface has an orangish tint, except for the throat and chest, which are white with some brown flecking.

Hypsiboas crepitans Ventral 1

Concealed surfaces

The concealed surfaces are colored similarly to the dorsum, except for the dark barring on the rear surfaces of the thighs.

Hypsiboas crepitans Concealed surfaces 1


The eye is grey, with a bronzy or yellowish cast.

Hypsiboas crepitans Eye 1


The webbing between the hands and feet is not particularly extensive in Hypsiboas crepitans. The webbing is pale in coloration.

Hypsiboas crepitans Extremeties 1

Life history

Breeding season

Breeding occurs throughout much of the rainy season (Ibanez et al 1999, Duellman 2001). Males call from the edges of temporary ponds or flooded grassy areas (Ibanez et al 1999).


Females may lay over 1,000 eggs in a single oviposition event (Stebbins and Hendrickson 1959).


Tadpoles are grey or light brown (Duellman 2001). The tail has more yellow undertones (Duellman 2001). The tadpole body is ovoid, with a rather long tail that ends in a distinct point (Duellman 2001). The upper caudal fin is much deeper than the lower (Duellman 2001).

Ecology behavior and evolution


Hypsiboas crepitans has a rattle-like call, consisting of a series of short, low or medium pitches notes (Ibanez et al 1999).

Behavior and communication

Males do not construct nests, as do other species in this group (Duellman 2001, Fouquette 1966).

Taxonomy and systematics


  • Kingdom:Animalia
    • Phylum:Chordata


Wied-Neuwied 1824


Latin crepitans = rattling

Type locality

Tamburil, Jiboya, Arrayal da Conquista (Brazil)


This form likely represents a complex of several species.

Habitat and distribution


Lowland and premontane forest to 2300 m.


Brazil, Colombia, French Guiana, Guyana, Panama, Suriname, Trinidad and Tobago, Venezuela


Hypsiboas crepitans distribution
Distrubution map (IUCN)


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Additional resources

Audio Files

Vocalization of Hypsiboas crepitans