Chinchaysuyoa Marceniuk et al. 2019

Marceniuk, Alexandre Pires, Oliveira, Claudio & Ferraris Jr, Carl J., 2024, A new classification of the family Ariidae (Osteichthyes: Ostariophysi: Siluriformes) based on combined analyses of morphological and molecular data, Zoological Journal of the Linnean Society 200 (2), pp. 426-476 : 440-442

publication ID	https://doi.org/ 10.1093/zoolinnean/zlad078
publication LSID	lsid:zoobank.org:pub:5D6C7EBF-E568-4100-9364-2DD357003878
DOI	https://doi.org/10.5281/zenodo.11240803
persistent identifier	https://treatment.plazi.org/id/03F32B77-FFE9-FFB1-0EEB-F98BFE7F4FF1
treatment provided by	Plazi
scientific name	Chinchaysuyoa Marceniuk et al. 2019
status

Treatment

( Figs 1–3 View Figure 1 View Figure 2 View Figure 3 , 12A View Figure 12 – 13 View Figure 13 )

Type species: Arius labiatus Boulenger, 1898 .

Diagnosis

Mesethmoid posterior horn tubular, narrow, and elongate (5, 0> 1); bony bridge formed by lateral ethmoid and frontal cylindrical and thin (16, 0> 1); vomer anterior margin very pronounced and acute (50, 0> 1); accessory tooth plates small, transversely elongate, and narrow (60, 2> 0); optic foramen very reduced (67, 1> 2); anterior opening of aortic canal at base of subvertebral process and anteroventrally oriented (77, 0> 1); posterior process of exoccipital connected to Müllerian ramus by suture (93, 0> 1); one-half or less of interopercle posterior part contacting ventral margin of opercle (131, 1> 0); anterior portion of interopercle compressed and bifurcate (132, 0> 1); interopercle anterior portion conspicuously narrow (133, 0> 1); metapterygoid one and a one-half times longer than deep in perpendicular section (135, 1> 2); uncinate process of third epibranchial much longer and wider than mesial portion of third epibranchial delimited by uncinate process (182, 0> 1); posterior process of cleithrum very long (224, 1> 2); gas bladder with three chambers (238, 0> 2).

Included species

Chinchaysuyoa ortegai Marceniuk, Marchena, Oliveira & Betancur-R., 2019

Chinchaysuyoa labiata (Boulenger, 1898) *.

442 • Marceniuk et al.

Habitat and distribution: Freshwater, western South America in Ecuador and Peru ( Fig. 12 View Figure 12 ).

Remarks

The total-evidence analysis corroborates the monophyly, relationships, and species composition of Chinchaysuyoa , as proposed by Marceniuk et al. (2019b).