Lasiancistrus schomburgkii ( Guenther , 1864)

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

Lasiancistrus schomburgkii ( Guenther, 1864)

Materials

Type status: Other material. Occurrence: catalogNumber: 43886 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 1; otherCatalogNumbers: UFAM:CTGA:14329; associatedSequences: KP772579; Taxon: scientificName: Lasiancistrus schomburgkii ( Günther, 1864); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Lasiancistrus; specificEpithet: schomburgkii; scientificNameAuthorship: ( Günther, 1864); Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.6909; decimalLongitude: -57.42231; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 43892 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 1; otherCatalogNumbers: UFAM:CTGA:14427; Taxon: scientificName: Lasiancistrus schomburgkii ( Günther, 1864); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Lasiancistrus; specificEpithet: schomburgkii; scientificNameAuthorship: ( Günther, 1864); 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 (2005) based on the following characters: three rows of lateral plates on the caudal peduncle; bar-shaped opercle; snout plates present; lateral plates not keeled;> 30 teeth per jaw ramus; body and fins (except dorsal and caudal) dark with small pale dots; plates not outlined with dark pigment; and caudal fin with darker lower lobe. We note that the whisker-like odontodes characteristic of the genus were not apparent in our juvenile specimens, but we did observe bifurcating tentacules on the interopercular plate, and combined with the other characters, are confident that the specimens belong to Lasiancistrus schomburgkii as proposed by Armbruster (2005).

Two individuals were caught by hand from woody substrates at the margin of the main river (sampling sites NH05 and NH08). An example of a live specimen is pictured in Fig. 20.