Phyllonastes arutam (Brito-Zapata, Chávez-Reyes, Pallo-Robles, Carrión-Olmedo, Cisneros-Heredia, and Reyes-Puig, 2024)

Class: Amphibia > Order: Anura > Superfamily: Brachycephaloidea > Family: Craugastoridae > Subfamily: Holoadeninae > Genus: Phyllonastes > Species: Phyllonastes arutam

Noblella arutam Brito-Zapata, Chávez-Reyes, Pallo-Robles, Carrión-Olmedo, Cisneros-Heredia, and Reyes-Puig, 2024, PeerJ, 12(e17939): 7. Holotype: ZSFQ 1882, by original designation. Type locality: "Comunidad de Río Blanco (3.9086°S, 78.4892°W, 1850 m), Parroquia de Paquisha, Cantón Paquisha, Provincia de Zamora Chinchipe, República del Ecuador". Zoobank Publication registration: AD15D34E-81A6-4666-AF30-E53D4F3C5541

Phyllonastes arutam – Alessandro Catenazzi (here, personal commun., 5 Oct. 2024). 

Common Names

Arutam Leaflitter Frog (English name: original publication).

Arutam Rain Frog (Coloma and Duellman, 2025, Amph. Ecuador. Vol. 4: 437).

Rana de Hojarasca de Arutam (Spanish name: original publication). 

Cutin de Arutam (Spanish: Coloma and Duellman, 2025, Amph. Ecuador. Vol. 4: 437).

Distribution

Moderate elevations on the Amazonian slopes of the Andes and Cordillera del Cóndor and the Cordillera de Kutucú in Ecuador (provinces of Pastaza, Zamora Chinchipe, and Morona Santiago), 804 to 2350 m elevation; presumably to be found in the Cordillera del Condor in adjacent Amazonas, Peru (see comment).

Geographic Occurrence

Natural Resident: Ecuador

Likely/Controversially Present: Peru

Endemic: Ecuador

Comment

The sister taxon of Noblella myrmecoides, according to the original publication, where comparative morphology, osteology, and molecular markers (16S mtDNA) were detailed. Transfer to Phyllonastes based on morphology and placement in tree in the original publication in comparison to the tree provided by von May, Diaz, Ttito, Santa-Cruz Farfan, and Catenazzi, 2024, Diversity, 16 (613): 1–15. Coloma and Duellman, 2025, Amph. Ecuador. Vol. 4: 437–438, provided an account, with photographs, which summarized identification, adult morphology, systematics, natural history, distribution (including a dot map for Ecuador), and conservation. Reyes-Puig and Carrión-Olmedo, 2026, Zootaxa, 5768: 592–596, provided mtDNA evidence that some records of Phyllonastes lochistes provided by Harvey et al. (2013) and Ortega et al. (2025) are applicable to Phyllonastes arutam, discussed the substantial confusion in the earlier literature, and provided a molecular tree for these samples and a dot map of the distribution. 

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