Comprehensive DescriptionRead full entry
Diagnosis: Gastrotheca andaquiensis can be distinguished by the following combination of characters: lack of co-ossified epicranial skin; short, pointed dermal appendages above the orbits and on the heels; enlarged frontoparietal; distinct tympanum; absence of dorsolateral skin folds; relatively long hind limbs; large digital discs; granulated dorsal surfaces; distinctive coloration; a brooding "pouch" on the back with a longitudinal, medial, posterior external opening; and direct-developing offspring that complete development within the "pouch" (Ruiz-Carranza and Hernández-Camacho, 1976). In contrast to the original description which stated that co-ossification was present, the holotype's lack of co-ossified epicranial skin was noted by Duellman, 1989, and Mueses-Cisneros, 2005).
Description: A large species of Gastrotheca, reaching up to 77 mm SVL (Duellman 1989) The holotype was described as follows by Ruiz-Carranza and Hernández-Camacho (1976), except where noted. Body is robust, with post-axillary width significantly wider than the head. The epicranial skin is not co-ossified; although co-ossification was stated to be present in the original description by Ruiz-Carranza and Hernández-Camacho (1976), Duellman (1989) and Mueses-Cisneros (2005) found otherwise in re-examining the holotype). The snout is broadly rounded in dorsal view, almost truncate in lateral profile, with the upper lip projecting just slightly. Canthus rostralis is well-defined; in dorsal view, the canthi form weakly concave arcs. The dorsal surface of the snout is slightly concave between the canthi. The loreal region is also slightly concave. Nares are subcircular and slightly prominent, directed anterolaterally, and nearer to the snout tip than to the eyes. A large pit is present beneath each nostril. Prevomerine dentigerous processes are present between the choanae. The orbit is slightly wider than the eye-nostril distance, and the interorbital width is much greater than the width of the upper eyelid. The tympanum is ovoid and well-defined, with the major axis inclined obliquely and anterodorsally. Prominent supratympanic crest extends only to the scapular region The forearm is significantly more robust than the upper arm. No ulnar fold is present. Finger I is nearly equal in length to Finger II. Finger II reaches the level of the terminal half of the disc of Finger IV, but does not reach as far as the base of the disc of Finger III. Webbing is greatly reduced in the hands. Discs are well-developed. Subarticular palmar tubercles are transversely oblong. Palmar tubercle is bifid. Pectoral skinfold may be absent. Toes IV and V are subequal. Toe II is longer than Toe I, according to the original description, but Duellman (1989) notes that the first and second toes are of equal length. Subarticular plantar tubercles are rounded. Metatarsals each bear a longitudinal row of accessory tubercles. A calcar is present, slightly compressed dorsoventrally. Dorsal skin is conspicuously granular, with irregular alternation of tiny granules and larger granules, including the flanks and limbs but excluding the upper lip and medial nasolabial skin adjacent to the nostrils. Gular region has large granules. Upper eyelid has a small blunt skin process ca. 1 mm long and a row of slightly larger granules. A pouch is present on the suprascapular region, with the opening longitudinal, medial, posterior, and deeply sunken. Ventral surfaces (excluding limbs) have granular skin, with the largest and most prominent granules on the belly and thigh. Upper arms and forearms have finely granulated ventral surfaces. Anal ridge has four protrusions. Two conspicuously larger granules are present on each side of the posterior end of the pubic symphysis, forming an arc of posterior convexity (Ruiz-Carranza and Hernández-Camacho 1976).
In life, this species is sexually dimorphic in coloration, with males being brown and females green according to Lynch (pers. comm., cited in Hoffman and Blouin 2000). However, a smaller male (49.5 mm) was noted by Duellman and Lynch (1988) as being pale green with a suffusion of bronze on the dorsolateral part of the body and on the upper arms and the thighs. Toepads are jade green and the iris is pale green (Duellman and Lynch 1988). Duellman (1989) also notes that the dorsal coloration is extremely variable, ranging from uniform green to reddish spots on a green background, and that the tongue and buccal cavity are blue.
The specific epithet refers to the indigenous Andaquíes tribe (Chibcha linguistic family). This tribe inhabits the slopes of the southern part of the Eastern Cordillera of Colombia, where the type locality for G. andaquiensis is found (Ruiz-Carranza and Hernández-Camacho 1976).
G. humbertoi was synonymized with G. andaquiensis by Duellman (1989).