Netuma

Alexandre P. Marceniuk & Naércio A. Menezes, 2007, Systematics of the family Ariidae (Ostariophysi, Siluriformes), with a redefinition of the genera., Zootaxa 1416, pp. 1-126 : 78-79

publication ID

z01416p001

publication LSID

lsid:zoobank.org:pub:FFC65592-D8DB-41BE-AEAC-A41EAB6C6185

DOI

https://doi.org/10.5281/zenodo.6236990

persistent identifier

https://treatment.plazi.org/id/B2B6D433-6BC2-D596-99B3-5254F8289D4B

treatment provided by

Thomas

scientific name

Netuma
status

 

Netuma View in CoL View at ENA Bleeker, 1858

(fig. 67)

Catastoma   ZBK Kuhl & van Hasselt in Cuvier & Valenciennes, 1840b: 60. Type species: Catastoma nasutum   ZBK Kuhl & van Hasselt, 1840. Type by monotypy. Gender: neuter.

Sarcogenys   ZBK Bleeker, 1858: 96. Type species: Sarcogenys rostratus   ZBK Kuhl & van Hasselt. Gender: feminine.

Netuma Bleeker, 1858: 62, 67, 93. Type species: Bagrus netuma   ZBK Valenciennes, 1840. Type by absolute tautonymy. Gender: feminine.

Diagnosis. The combination of the following unique (1 and 2) and shared (3 to 10) characters distinguishes Netuma from all other genera of the Ariidae : (1) two pairs of accessory tooth plates; (2) orbitosphenoid with a short and acute lateral process; (3) lateral processes of vomer thin (fig. 68) [shared with Amphiarius , Brustiarius   ZBK , Carlarius , Cathorops , Cephalocassis   ZBK , Cochlefelis   ZBK , Cryptarius   ZBK , Doiichthys   ZBK , Genidens   ZBK , Hemiarius   ZBK , Nedystoma   ZBK , Neoarius   ZBK , Notarius   ZBK (with exception of N. planiceps ) and Potamarius   ZBK ]; (4) premaxillary very wide its length more than 3 times in its width (shared with Bagre , Brustiarius   ZBK , Cochlefelis   ZBK and Galeichthys   ZBK ); (5) posterior portion of second basibranchial short (fig. 69) (shared with Arius gagora , A. maculatus   ZBK , Aspistor   ZBK and Genidens   ZBK ); (6) anterior process of first hypobranchial on central portion of bone (fig. 69) (shared with Neoarius   ZBK ); (7) lateral face of third pharyngobranchial very conspicuous and acute (shared with Arius   ZBK , Brustiarius   ZBK , Nedystoma   ZBK , Neoarius   ZBK , Plicofollis   ZBK and Potamosilurus ); (8) base of adipose fin very short, less than one-half length of anal-fin base [shared with Bagre , Brustiarius   ZBK , Cathorops , Cryptarius   ZBK and Plicofollis   ZBK (with exception of P. platystomus )]; (9) origin of adipose fin vertically over posterior half of anal fin [shared with Bagre , Brustiarius   ZBK and Plicofollis   ZBK (with exception of P. platystomus )]; (10) lateral line bifurcated at caudal region (shared with Arius   ZBK , Bagre , Batrachocephalus   ZBK , Ketengus   ZBK , Osteogeneiosus   ZBK , Plicofollis   ZBK and Sciades couma ).

Supplementary morphological characters. Cephalic shield granulated visible under the skin; lateral ethmoid and frontal delimiting a small fenestra indistinct under the skin; medial groove of neurocranium very distinct, limited by frontal bones and/or on supraoccipital; posterior cranial fontanel reduced or entirely closed with growth; fenestra limited by supraoccipital, pterotic and sphenotic absent; fossa limited by pterotic, supracleithrum and extrascapular present or absent; epioccipital not invading dorsal portion of cephalic shield; occipital process triangular moderately long and wide, progressively narrower toward its posterior part; anterior and median nuchal plates fused and indistinct, forming a structure of semi-lunar aspect; tooth plates associated with vomer round; accessory tooth plates present, anterior pair transversely elongate and narrow, posterior one triangular shaped, bearing conical teeth; maxillary barbel fleshy and cylindrical; two pairs of mental barbels; base of adipose fin very short, less than one-half length of anal-fin base; lateral line bifurcated at caudal region, reaching base of caudal-fin upper and lower lobes; cleithrum wide with second dorsal process on its upper portion; posterior cleithral process of moderate size, distinct from second process dorsal to cleithrum.

Remarks. The nominal genera Catastoma   ZBK and Sarcogenys   ZBK are nomina nuda since they were published without description of the genera and of the type-species ( Catastoma nasutum   ZBK Kuhl & van Hasselt, 1840 = Bagre thalassinus Rüppell, 1837 and Sarcogenys rostratus   ZBK Kuhl & van Hasselt, 1858 = Bagre thalassinus Rüppell, 1837), making it impossible recognizing them (International Code of Zoological Nomenclature, articles11d and 16).

Distribution and habitat. Eastern Africa, South and southeast Asia, southern New Guinea and northern Australia, marine and brackish waters.

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Siluriformes

Family

Ariidae

Loc

Netuma

Alexandre P. Marceniuk & Naércio A. Menezes 2007
2007
Loc

Sarcogenys

Bleeker 1858
1858
Loc

Sarcogenys rostratus

Bleeker 1858
1858
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