Cochlefelis Whitley, 1941

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 : 467

Cochlefelis Whitley, 1941

MP 100, BI 1, ML 100

( Figs 1–3 , 38C , 43 )

Type species: Arius spatula Ramsay & Ogilby, 1886 .

Diagnosis

Posterior branch of lateral ethmoid depressed (13, 0> 1); vomer lateral processes very narrow (53, 0> 1); parasphenoid very wide in ventral view (66, 0> 1); exoccipital posterior process not supporting Müllerian ramus (94, 1> 0); maxilla lateral and mesial margins slender proximally, narrow and pointed distally (102, 2> 3); articulation of autopalatine with lateral ethmoid in middle of bone (111, 2> 1); premaxilla wide and short, its length more than four times in width (120, 1> 0); dorsal crest on premaxilla beginning between lateral one-third or one-half of anterior margin (124, 0> 1); anteroventral portion of opercle subtriangular (127, 1> 4); one-half or less of interopercle posterior part contacting ventral margin of opercle (131, 1> 0); first external branchiostegal ray narrow proximally and broad distally (147, 1> 0); posterior ceratohyal long (153, 0> 1); third basibranchial long and narrow (169, 1> 2); mesial one-fourth of fourth epibranchial robust, almost as wide as long (186, 1> 0); 39 or more caudal vertebrae (216, 1> 0).

Ambiguous optimization: Posterior cranial fontanel formed exclusively frontals (25, 0> 1); lateral margin of third pharyngobranchial weakly developed and rounded (193, 1> 0); 15 or more ribs (213, 0> 1).

Included species

Cochlefelis danielsi Regan, 1908

Cochlefelis insidiator Kailola, 2000 * sedis mutabilis

Cochlefelis spatula Ramsay & Ogilby, 1886 .

Habitat and distribution: Fresh and brackish water, southern New Guinea ( Fig. 38 ).

Remarks

The monophyly and species composition of Cochlefelis, sensu Kailola 2004 , Betancur-R. 2009, and Marceniuk et al. 2012, are supported by the total-evidence analysis.

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 38. Representative skulls, in dorsal view, and distribution of the subtribe Doiichthyina.A, Brustiarius nox, AUM 47488. B, Paracinetodus carinatus, AUM 47550.C, Cochlefelis spatula, AUM 50296. D, Nedystoma dayi, AUM 47500. E, Aceroichthys dioctes, AUM 47507. F, Pachyula crassilabris, AUM 47509. G, Pararius proximus, AUM 47486.H, Potamosilurus velutinus, AUM 47489.* marine, ** brackish waters, *** freshwater.

Figure 43. Cochlefelis spatula Regan, 1908, New Guinea, photograph by Ricardo Betancur-R., type species of the genus.