This is a relatively large species of Cochranella, with the male holotype measuring 26.5mm in SVL. It can be distinguished from other members of the Cochranella granulosa group by the combination of crenulate skinfolds, Finger I shorter than Finger II, and a distinctive coloration of green with bright white spots.
Characteristics of this species include (1) presence of vomerine teeth; (2) snout round when viewed dorsally, sloping 45° in profile view; (3) flared lips; (4) eye diameter almost double the width of finger III disc; (5) tympanum not visible, but present below skin; (6) dorsum smooth, but ornamented with round, flat tubercles; tubercles more numerous on flanks and limbs; (7) white parietal peritoneum; visceral peritonea and colon white; peritoneum of other large abdominal organs clear; (8) 3-lobed liver; (9) arms short and humeral spine absent; (10) enlarged prepollex without a spine; (11) webbing present between fingers III and IV and among all toes; (12) nuptial excrescence lacking; (13) below cloaca, presence of two fleshy horizontal folds; area between folds and anus ornamented with numerous white tubercles; (14) pair of large, oval tubercles in rictal area; (15) crenulate dermal folds along postaxial edge of forearm, hand, tarsus, distal foot; (16) low calcar (large triangular tubercle extending to tarsal fold around ankle); (17) skin areolate on underside of abdomen and thigh; skin smooth on chest and gular area; (18) very small, rounded vocal apertures found far posterior in floor of mouth; (19) bones light green.
The dorsal surface is dark green scattered with numerous bright white spots on rounded flat tubercles; low glandular/tubercular discontinuous white line along upper lip; tongue is green; iris has gray speckles; white dermal folds and glands; white gular skin; skin of parietal peritoneum white; skin of lower ventral body clear, intestines visible; visceral peritoneum pigmented white.
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Bolivia
This species is found in Bolivia, in the cloud forests of northern La Paz. The holotype was collected in the Territorio Comunitario de Origen y Reserva de la Biosfera Pilón Lajas at 1000m asl. The emergent layer of the forest here reaches 35m. Cochranella phryxa prefers vegetation near streams.
Life History, Abundance, Activity, and Special Behaviors
The holotype was found perched on a leaf 50cm above ground, adjacent to a dry stream in September. When it was illuminated by the collector's flashlight, the specimen rapidly flattened out its body over the surface of the leaf, effectively camouflaging itself into the appearance of a leaf covered in fungus. Cochranella phryxa was found in sympatry with an undescribed species of Cochranella and C. spiculata.
Trends and Threats
The type locality is within a protected area, the Territorio Comunitario de Origen y Reserva de la Biosfera Pilón Lajas.
Phryxa is derived from the Greek word phryx, which means fold, alluding to the many folds found on the body of Cochranella phryxa. This is the first report of Bolivan Cochranella species being found sympatrically.
Aguayo, R., and Harvey, M. B. (2006). ''A new glassfrog of the Cochranella granulosa group (Anura: Centrolenidae) from a Bolivian cloud forest.'' Herpetologica, 62(3), 323-330.
Written by Xi Zhai (xzhaix AT berkeley.edu), UC Berkeley
First submitted 2008-10-20
Edited by Kellie Whittaker (2008-11-18)
Species Account Citation: AmphibiaWeb 2008 Cochranella phryxa <http://amphibiaweb.org/species/6866> University of California, Berkeley, CA, USA. Accessed Nov 18, 2019.
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Citation: AmphibiaWeb. 2019. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 18 Nov 2019.
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