Kyataphisa, Marceniuk & Oliveira & Ferraris Jr, 2024

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 : 460-461

Kyataphisa gen. nov.

MP 100, BI 1, ML 100

( Figs 1– 3 , 24E , 35 )

ZooBank registration: urn:lsid:zoobank.org:act:2981DCA4-DDB0-49A5-BE7A-6D05DD7E750 .

Type species: Pimelodus nenga Hamilton, 1822 .

Diagnosis

Ambiguous optimization: Posterior branches of mesethmoid moderately long, delimiting between one-fourth and one-half of length of anterior cranial fontanel (8, 0> 1); fenestra delimited by lateral ethmoid and frontal very small or indistinct (17, 1> 0); pterotic mesial border with parieto-supraoccipital as long as anterior border with sphenotic (36, 1> 2); temporal fossa much reduced (39, 0> 1); accessory tooth plates small, vertically oval (60, 3> 2); exoccipital posterior process not supporting Müllerian ramus (94, 1> 0); lateral and mesial portions of premaxilla of different sizes (121, 0> 1); Müllerian ramus bone blade evident only basally (206, 2> 1); dorsal-fin spine prolonged into filament (221, 0> 1); second dorsal cleithral process posteriorly directed and parallel to posterior process (226, 1> 0).

Etymology

Kyataphisa is from the Bengali, meaning catfish.

Included species

Kyataphisa nenga Hamilton, 1822 .

Habitat and distribution: Brackish and marine waters, South and Southeast Asia ( Fig. 24 ).

Remarks

Kyataphisa is established to accommodate Kyataphisa nenga and a second species ( Kyataphisa aff. nenga ) that was not examined in a previous morphological study ( Marceniuk et al. 2012), corroborating a previous morphological study (as Arius caelatus in Marceniuk et al. 2012) and a molecular study (as Arius nenga in Betancur-R. 2009).

Figures

Figure 1. MP analysis.Subfamilies (SF) Galeichthyinae (pink), Bagreinae (bright blue), and Ariinae (dark blue). Tribe (T) Ariini (blue), Cathopsini (orange), Genidentini tribe nov. (brown), and Sciadeini tribe nov. (light green).Subtribe (ST) Ariina (light blue) and Doiichthyina (green). Incertae sedis taxa (IS) (red). Numbers over branches correspond to the bootstrap support.

Figure 2. ML analysis. Subfamilies (SF) Galeichthyinae (pink), Bagreinae (bright blue), and Ariinae (dark blue). Tribe (T) Ariini (blue), Cathopsini (orange), Genidentini tribe nov. (brown), and Sciadeini tribe nov. (light green). Subtribe (ST) Ariina (light blue) and Doiichthyina (green). Incertae sedis taxa (IS) (red). Numbers over branches correspond to the bootstrap support.

Figure 3. BI analysis.Subfamilies (SF) Galeichthyinae (pink), Bagreinae (bright blue), and Ariinae (dark blue). Tribe (T) Ariini (blue), Cathopsini (orange), Genidentini tribe nov. (brown), and Sciadeini tribe nov. (light green).Subtribe (ST) Ariina (light blue) and Doiichthyina (green). Incertae sedis taxa (IS) (red). Numbers over branches correspond to the bootstrap support.

Figure 24. Representative skulls, in dorsal view, and distribution of the subtribe Ariina.A, Arius maculatus, AUM 44875. B, Cephalocassis melanochir, CAS 49426. C, Cryptarius truncatus, AUM 50243. D, Hexanematichthys sagor, AUM 50242. E, Kyataphisa nenga, AUM 46280. F, Osteogeneiosus militaris, AUM 44880. G, Pseudosciades sona, AUM 44861. * marine, ** brackish water, *** freshwater.

Figure 35. Kyataphisa nenga, Indo-West Pacific, photograph by Ricardo Betancur-R., type species of the genus.