Pseudoloricaria laeviuscula (Valenciennes, 1840)

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

Pseudoloricaria laeviuscula (Valenciennes, 1840)

Materials

Type status: Other material. Occurrence: catalogNumber: 43870 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 3; otherCatalogNumbers: UFAM:CTGA:14541; UFAM:CTGA:14542; UFAM:CTGA:14543; associatedSequences: KP772602; Taxon: scientificName: Pseudoloricaria laeviuscula (Valenciennes, 1840); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Pseudoloricaria; specificEpithet: laeviuscula; scientificNameAuthorship: (Valenciennes, 1840); Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -2.02386; decimalLongitude: -56.78235; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 43895 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 4; otherCatalogNumbers: UFAM:CTGA:14042; UFAM:CTGA:14043; UFAM:CTGA:14046; UFAM:CTGA:14047; Taxon: scientificName: Pseudoloricaria laeviuscula (Valenciennes, 1840); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Pseudoloricaria; specificEpithet: laeviuscula; scientificNameAuthorship: (Valenciennes, 1840); 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: 33893 ; recordedBy: Raphael Leitão; Henrique Lazzarotto; individualCount: 1; Taxon: scientificName: Pseudoloricaria laeviuscula (Valenciennes, 1840); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Pseudoloricaria; specificEpithet: laeviuscula; scientificNameAuthorship: (Valenciennes, 1840); Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.99972; decimalLongitude: -56.51611; geodeticDatum: WGS84; Identification: identifiedBy: W. Ohara; Rupert A. Collins; identificationQualifier: aff. laeviuscula; Event: eventDate: 2009-09-23; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen

Notes

Identification to species level follows Isbrücker and Nijssen (1976) and Covain and Fisch-Muller (2007) based on the following characters: lower lip bilobate with median furrow; whip on upper caudal spine absent; abdomen covered with small plates lacking organisation; elliptical area of abdominal plates at level of pelvic girdle absent; rostrum not strongly pronounced; pelvic-fin spine longer than last pelvic-fin branched ray; colouration comprising dark dots (except ventral surface and anal fin); lower lobe of caudal darker than upper; and basicaudal spot present in juveniles.

Three adult individuals were caught by hand-net at night over a sandy/silty substrate (sampling site NH12), and four juveniles were caught further upstream on the sandy margins of the river (sampling site NH05). An example of a live adult specimen is pictured in Fig. 27.

One further specimen record of this species was obtained from the fish collection at INPA; this individual had been identified as P. aff. laeviuscula , but we include it here under P. laeviuscula until further information becomes available.