Agalychnis terranova Rivera-Correa, Duarte-Cubides, Rueda-Almonacid & Daza-R., 2013
|Species Description: Rivera-Correa M, Duarte-Cubides F, Rueda-Almonacid JV, Daza JM 2013 A new red-eyed treefrog of Agalycnis (Anura: Hylidae: Phyllomedusinae) from middle Magdalena River valley of Colombia with comments on its phylogenetic position Zootaxa 3636:85-100.|
© 2019 Daniel Vásquez-Restrepo (1 of 2)
The body of A. terranova tadpoles is ovoid in the lateral view and elliptic in dorsal view. The body is two times longer than it is wide and the body length is slightly less than half the total length including the tail body. The snout is rounded and the nostrils are dorsolateral and elliptical with slightly flattened dorsal edge. The nostrils are closer to tip of the snout than the eyes. The eyes are large relative to the body and dorsolateral. The vent tube is short, opening postero-laterally, and connected along all its length with the ventral fin on the ventral edge. The dorsal fin emerges posteriorly to the body tail-junction and is not as deep as the ventral fin. The ventral fin emerges anteriorly to the vent tube and narrows posteriorly. Hind limb length at stage 39 equals 32.4% of total length with vestigial webs are in fingers III – IV, IV – V. The width of the oral disc is 50% of maximum body width and is directed anteroventrally. The median part of the posterior labium is bordered by a single row of papillae and the rest of the mouth is bordered by two to four rows of papillae. The upper jaw is robust and the lower jaw is more slender and V-shaped. Both jaws have fine serrations and are wide at the base. There are two rows of labial teeth on the anterior labium and three rows of labial teeth on the posterior labium (Rivera-Correa et al. 2013).
Agalychnis terranova is readily distinguished from all species members of the Agalychnis callidryas group by the former’s orange flanks speckled with small white warts compared to the blue flanks of Agalychnis callidryas. This is the main distinction between A. terranova and its sister species, A. callidryas, however the presence of a red iris, less extensive webbing, tubercles, and a gold reticulated membrane palpebral are other distinctions between A. terranova and other Agalychnis species (River-Correa et al. 2013).
In life, the dorsal regions of the body, forearms, loreal, and tympanic regions are green. The flanks are orange with white warts. The upper arms, fingers, and toes are light orange, except for the outer finger and toe, which are orange-green. The cloacal area, throat, and ventral side area are creamy-white. The iris is red with black reticulations and there are golden reticulations in the palpebral membrane. Nuptial excrescence are dark brown (River-Correa et al. 2013).
In preservation, the dorsal regions of body, forearms, legs, loreal, and tympanic regions are light blue. The flanks, ventral side, arms, fingers and toes remain cream colored. The iris becomes copper-like. The nuptial excrescence remain dark brown (River-Correa et al. 2013).
The dorsum and flanks of A. terranova tadpoles are a blotchy brown color with olive brown and silver melanophores. The dorsum of phalanges are brownish. The oral disc has many spaced melanophores. The parietal peritoneum is an iridescent platinum-yellow color. The dorsal and ventral tail fins are transparent and highly vascularized with scattered red spots and scattered dark pigmentations that persist in preserved specimens with dendritic appearance. The iris is gold (Rivera-Correa et al. 2013).
Adult females are roughly 25% larger than males in snout-vent length. The number of warts on the dorsal side can vary between 1 - 4 warts. The warts on larger individuals are more spaced. There is variation in the webbing formulae of fingers and toes present in specimens. Vomerine teeth number can vary between 3 to 8 teeth (River-Correa et al. 2013).
Variation of A. terranova tadpoles is not documented although there are ontogenic changes consistent with other species in the Agalychnis genus.
Distribution and Habitat
Life History, Abundance, Activity, and Special Behaviors
Calls from A. terranova were recorded calling from vegetation of 2 to 3 meters in height near artificial ponds (River-Correa et al. 2013).
Breeding was not observed at the time of the species’ description. Mating is presumed to occur randomly between individuals when an encounter occurs, and are expected to be conducted near the ground above moving freshwater bodies of water (River-Correa et al. 2013).
Agalychnis terranova has indirect development with a tadpole stage (River-Correa et al. 2013).
Other amphibians found in sympatry with A. terranova are Craugastor raniformis, Dendrobates truncatus, Engystomops pustulosus, Hypsiboas boans, Leptodactylus bolivianus, Phyllomedusa venusta, Pristimantis taeniatus, Rhinella gr. margaritifera, Sachatamia punctulata, Scinax rostratus and Smilisca phaeota (Rivera-Correa et al. 2013).
Trends and Threats
Possible reasons for amphibian decline
General habitat alteration and loss
PHYLOGENETIC RELATIONSHIPS:Bayesian Inference on the 12S, 16S, and valine-tRNA regions indicate that A. terranova is sister to A. callidryas. Together they are sister to a clade composed of A. annae and A. moreletii (River-Correa et al. 2013).
The species epithet, “terranova”, comes from the Latin word “terra” referring to Earth and “novus” meaning “new”, which alludes to the fact that the species was found in an area in which no other Agalychnis species had ever been recorded (River-Correa et al. 2013).
IUCN SSC Amphibian Specialist Group. 2017. "Agalychnis terranova". The IUCN Red List of Threatened Species. DOI: https://dx.doi.org/10.2305/IUCN.UK.2017-2.RLTS.T77185986A77186132.en.
River-Correa, M., Duarte-Cubides, F., Rudea-Almonacid, J. V. Daza, J. M. (2013). "A new red-eyed treefrog of Agalychnis (Anura: Hylidae: Phyllomedusinae) from middle Magdalena River valley of Colombia with comments on its phylogenetic position." Zootaxa 3636(1), 085-100. [link]
Originally submitted by: Blake Widener, Alexiana Pou, Rocio Venegas (2021-06-29)
Distribution by: Blake Widener, Alexiana Pou, Rocio Venegas (updated 2021-06-29)
Trends and threats by: Blake Widener, Alexiana Pou, Rocio Venegas (updated 2021-06-29)
Comments by: Blake Widener, Alexiana Pou, Rocio Venegas (updated 2021-06-29)
Edited by: Ann T. Chang (2021-07-16)
Species Account Citation: AmphibiaWeb 2021 Agalychnis terranova <https://amphibiaweb.org/species/7998> University of California, Berkeley, CA, USA. Accessed Feb 1, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 1 Feb 2023.
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