IUCN threat status:

Least Concern (LC)

Comprehensive Description

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Bufo haematiticus is a moderate to large-sized toad, with adult males 42 to 62 mm and adult females 50 to 80 mm in SVL. This species can be distinguished by the lack of cranial crests, having large parotoids, the presence of a distinct inner tarsal fold, and a "dead leaf" color pattern of light above and a broad dark lateral band (Savage 2002).

The head is as broad as it is long with large parotoid glands that are elongated, equal in area to the side of the head, and covered with pustulate warts. No cranial crests are present. Limbs are long. Finger I is longer than finger II; no webbing on any fingers. Single subarticular tubercles are present but supernumerary and accessory palmar tubercles are lacking. Toes are webbed at the base, with single rounded subarticular tubercles on the toes but no supernumerary or plantar tubercles. Inner metatarsal tubercle elongated, outer metatarsal tubercle small and rounded. There is a distinct inner tarsal fold. Dorsal surfaces and parotoid glands have warts and pustules. Adult males have a single internal subgular vocal sac that is fully distensible and a single vocal slit on either right or left. On the thumb, males have a brown nuptial pad (Savage 2002).

The dorsum has a coloration of tan to purplish gray, which may be uniform or marked with black spots and/or burnt orange blotches. The parotoids are a slightly lighter shade than the dorsum. The iris is dark brown to black with gold flecks. A white line outlines the top of a dark brown-black lateral stripe that runs from the tip of the snout along the side of the head and flank to the groin. The venter is light beige to yellow, often shading into burnt orange with dark brown marks on the chest (Savage 2002).

Larvae are small with an ovoid and somewhat depressed body, reaching 21 mm in total length at stage 37. Mouth is anteroventral, nostrils anterolateral, and eyes are dorsal. Lateral, sinistral spiracle, and medial vent tube. Tail long with low fins and a rounded tip. Oral disc small and emarginate, with beaks and 2/3 denticles, showing a broad A2 gap above the mouth. A single row of labial papillae is present lateral to the mouth. Dark brown dorsal coloration with clear venter. Dark tail musculature with clear fins (Savage 2002).

The karyotype is 2N=22. Chromosomes are metacentric to submetacentric. Five pairs are noticeably shorter than the others. Secondary constrictions are found on chromosomes 1, 4, and 7 (Bogart 1972).

A Spanish-language species account can be found at the website of Instituto Nacional de Biodiversidad (INBio).


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