Dekeyseria scaphirhyncha (Kner, 1854)

Collins, Rupert A., Duarte Ribeiro, Emanuell, Nogueira Machado, Valeria, Hrbek, Tomas & Farias, Izeni Pires, 2015, A preliminary inventory of the catfishes of the lower Rio Nhamunda, Brazil (Ostariophysi, Siluriformes), Biodiversity Data Journal 3, pp. 4162-4162 : 4162

Dekeyseria scaphirhyncha (Kner, 1854)

Materials

Type status: Other material. Occurrence: catalogNumber: 43878 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 8; otherCatalogNumbers: UFAM:CTGA:14311; UFAM:CTGA:14312; UFAM:CTGA:14313; UFAM:CTGA:14314; UFAM:CTGA:14315; associatedSequences: KP772574; Taxon: scientificName: Dekeyseria scaphirhyncha (Kner, 1854); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Dekeyseria; specificEpithet: scaphirhyncha; scientificNameAuthorship: (Kner, 1854); Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.84123; decimalLongitude: -57.07212; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 43884 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 1; Taxon: scientificName: Dekeyseria scaphirhyncha (Kner, 1854); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Dekeyseria; specificEpithet: scaphirhyncha; scientificNameAuthorship: (Kner, 1854); Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.71782; decimalLongitude: -57.36856; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen

Notes

Identification to species level follows Armbruster (2004), Rapp Py-Daniel (1985) and La Monte (1929) based on the following characters: lateral plates with well-developed keels; hypertrophied odontodes present along snout margin; three rows of lateral plates on the caudal peduncle; large interorbital distance; pronounced medial ridge on snout; head plates with sinuous rows of odontodes; interopercular plate with between 15 and 20 strong and distally hooked odontodes; pectoral spine roughly same length as head, with long odontodes; and spots on body roughly same size as those on head.

Nine individuals were caught by hand from woody substrates (sampling sites NH04 and NH08). In addition to the main river stem, the species was also observed in lake and igarapé habitats, and appeared abundant. It was not found in association with rocks. An example of a live specimen is pictured in Fig. 16.