Eleutherodactylus manantlanensis Grünwald, Reyes-Velasco, Franz-Chávez, Morales-Flores, Ahumada-Carrillo, Jones & Boissinot, 2018
Sierra Manantlán Trilling Frog
|Species Description: Grünwald CI, Reyes-Velasco J, Franz-Chávez H, Morales-Flores KI, Ahumada-Carillo IT, Jones JM, and Boissinot S. 2018. Six new species of Eleutherodactylus (Anura: Eleutherodactylidae: subgenus Syrrhophus) from Mexico, with a discussion of their systematic relationships and the validity of related species. Mesoamerican Herpetology 5: 7–83.|
Eleutherodactylus manantlanensis can be distinguished from others in the North American mainland Eleutherodactylus genus of the Syrrhophus subgenus through a variety of features. From E. longipes by E. manatlanensis having an opaque abdominal epidermis lacking a visible ventral vein and the absence of a visible annulus or distinct tympanum. It can be discerned from the E. nitidus species group by the presence of extended 3rd and 4th finger pads, pustulate skin, pale interorbital bar, and the absence of a compact, projecting lumbar gland in the inguinal area. From the E. modestus species group, it can be distinguished by a combination of pustulate skin, expanded finger tips, bright inguinal coloration on the thighs, and lack of compact, projecting lumbar glands above the inguinal region. It is most similar to E. nietoi, from which E. manantlanensis is distinguishable by having a larger size, less pustulate dorsum, lack of distinct tympanum, and pale-colored upper arms (Grünwald et al. 2018).
In life, the dorsal coloration can vary from pale to dark brown, tan, or yellow. The shoulders have pale-colored “saddle blotches” and a similarly colored interorbital bar at the top of its head. The tibia, tarsus, and forearms have dark-colored transverse bars while the upper arms are pale-colored and usually lack dark markings. The ventrum is grey-colored with white-colored spots or flecking (Grünwald et al. 2018).
At the time of their species description, there was little observed variation in the morphology or coloration. Some individuals may have fiery orange flash coloration present in the inguinal region, hind legs, and flanks (Grünwald et al. 2018).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Mexico
Life History, Abundance, Activity, and Special Behaviors
Trends and Threats
Possible reasons for amphibian decline
General habitat alteration and loss
Maximum likelihood and Bayesian inference methods on 16S rRNA, CytC oxidase subunit 1, and CytB data supports the placement of the E. modestus clade as the sister clade to the subclade containing E. manantlanensis along with E. teretistes, E. jaliscoenses, and E. grünwaldi (Hernández-Austria 2022).
The genus name, “Eleutherodactylus,” is derived from the Greek word for “free-toed” (Dodd 2013).
The species epithet, “manantlanenses,” is named for the incredibly biodiverse Sierra de Manantlán, where the species is likely endemic to, of the Sierra Madre del Sur that stretches from southwestern Jalisco to northern Colima (Grünwald et al. 2018).
Dodd, C. K. 2013. Frogs of the United States and Canada. John Hopkins University: JHU Press.
Grünwald, C. I., Reyes-Velasco, J., Franz-Chávez, H., Morales-Flores, K. I., Ahumada-Carrillo, I. T., Jones, J. M., Boissinot, S. (2018). “Six new species of Eleutherodactylus (Anura: Eleutherodactylidae: subgenus Syrrhophus) from Mexico, with a discussion of their systematic relationships and the validity of related species.” Mesoamerican Herpetology, 5, 6-83. [link]
Hernández-Austria, R., García-Vázquez, U. O., Grünwald, C. I., Parra-Olea, G. (2022). “Molecular phylogeny of the subgenus Syrrhophus (Amphibia: Anura: Eleutherodactylidae), with the description of a new species from Eastern Mexico.” Systematics and Biodiversity 20(1), 1-20. [link]
IUCN SSC Amphibian Specialist Group. (2020). "Eleutherodactylus manantlanensis." The IUCN Red List of Threatened Species 2020: e.T151283927A151283945. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T151283927A151283945.en. Accessed in May 2022
Porras, l. W., Wilson, l. D., Schuett, G. W., Reiserer, R. S. (2013). "A taxonomic reevaluation and conservation assessment of the common cantil, Agkistrodon bilineatus (Squamata: Viperidae): a race against time." Amphibian & Reptile Conservation 7, 48-73. [link]
Wilson, L. D., McCranie, J. R. (1992). "Status of amphibian populations in Honduras." Unpublished report to the task force on declining amphibian populations. 14 p.
Originally submitted by: Isaac Natanael Aguilar (2023-03-09)
Description by: Isaac Natanael Aguilar (updated 2023-03-09)
Distribution by: Isaac Natanael Aguilar (updated 2023-03-09)
Life history by: Isaac Natanael Aguilar (updated 2023-03-09)
Larva by: Isaac Natanael Aguilar (updated 2023-03-09)
Trends and threats by: Isaac Natanael Aguilar (updated 2023-03-09)
Comments by: Isaac Natanael Aguilar (updated 2023-03-09)
Edited by: Ann T. Chang (2023-03-09)
Species Account Citation: AmphibiaWeb 2023 Eleutherodactylus manantlanensis: Sierra Manantlán Trilling Frog <https://amphibiaweb.org/species/8842> University of California, Berkeley, CA, USA. Accessed Mar 26, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 26 Mar 2023.
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