Cephalocassis Bleeker, 1852

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 : 455-456

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.11282671

persistent identifier

https://treatment.plazi.org/id/03F32B77-FFFA-FFBF-0EA9-F9D4FDBD4DD2

treatment provided by

Plazi

scientific name

Cephalocassis Bleeker, 1852
status

 

Cephalocassis Bleeker, 1852 View in CoL View at ENA

( Figs 1–3 View Figure 1 View Figure 2 View Figure 3 , 24B View Figure 24 , 28 View Figure 28 )

Type species: Arius melanochir Bleeker, 1852 .

Diagnosis

Posterior branches of mesethmoid narrow (6, 0> 1); posterior branches of mesethmoid parallel throughout their entire extension (7, 0> 1); anterior portion of anterior cranial fontanel not delimitedbydorsalexpansionoforbitosphenoid (24, 1> 0); fenestra delimited by parieto-supraoccipital, pterotic and sphenotic present (34, 0> 1); parieto-supraoccipital process base almost as narrow as posterior portion (46, 1> 0); vomer anterior margin very pronounced and acute (50, 0> 1); tooth plates associated with vomer absent (55, 1> 0); lateral expansions of orbitosphenoid and pterosphenoid absent (64, 1> 0); optic foramen very reduced (67, 1> 2); basioccipital lateral process absent (82, 1> 0); space between transcapular process and otic capsule very small (89, 1> 2); teeth on dentary restricted to mesial two-thirds (116, 1> 0); premaxilla narrow and very long, its length two to three times in width (120, 1> 2); interopercle anterior portion conspicuously narrow (133, 0> 1); metapterygoid one and one-half times longer than deep in perpendicular section (135, 1> 2); ventral crest of hyomandibula absent (142, 0> 1); second external branchiostegal ray almost as wide as first ray (148, 0> 1); second basibranchial spindle shaped (166, 1> 0); first hypobranchial very elongate transversely, with well-developed and acute mesial face (172, 0> 1); anterior process of first hypobranchial very conspicuous (173, 0> 1); second hypobranchial very elongate transversely, its mesial face acute (176, 0> 1); posterior margin of fourth epibranchial slightly convex, one-fourth as wide as long (187, 0> 1); accessory crest connecting transverse and median crests associated with neural spine of fourth vertebra present (204, 0> 1).

Ambiguous optimization: Posterior cranial fontanel very wide and long (27, 2> 3).

Included species

Cephalocassis melanochir Bleeker, 1852 .

Habitat and distribution: Freshwater, Southeast Asia ( Fig. 24 View Figure 24 ).

Remarks

Hemipimelodus had been treated as a junior synonym of Cephalocassis View in CoL in recent morphological studies ( Marceniuk and Menezes 2007, Marceniuk et al. 2012), a condition supported by an extensive list of shared synapomorphies (2, 15, 50, 85, 116, 120, 135, 142, 166, 204, 148, 200, and 222) including an autapomorphy (presence of a fenestra delimited by the supraoccipital, pterotic, and sphenotic). The total-evidence analysis, however, corroborates results of a previous molecular analysis (Betancur-R. 2009), which supports the recognition of Cephalocassis View in CoL and Hemipimelodus as valid genera, indicating a strong morphological convergence of lineages restricted to freshwater. The inclusion of Cephalocassis View in CoL in the subtribe Ariina is supported by the MP and ML analyses.

Kingdom

Animalia

Phylum

Chordata

Order

Siluriformes

Family

Ariidae

Loc

Cephalocassis Bleeker, 1852

Marceniuk, Alexandre Pires, Oliveira, Claudio & Ferraris Jr, Carl J. 2024
2024
Loc

Ariina

Bleeker 1858
1858
Loc

Hemipimelodus

Bleeker 1857
1857
Loc

Hemipimelodus

Bleeker 1857
1857
Loc

Cephalocassis

Bleeker 1852
1852
Loc

Cephalocassis

Bleeker 1852
1852
Loc

Cephalocassis

Bleeker 1852
1852
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF