A preliminary inventory of the catfishes of the lower Rio Nhamunda, Brazil (Ostariophysi, Siluriformes) Author Collins, Rupert A. Author Duarte Ribeiro, Emanuell Author Nogueira Machado, Valeria Author Hrbek, Tomas Author Farias, Izeni Pires text Biodiversity Data Journal 2015 3 4162 4162 http://dx.doi.org/10.3897/BDJ.3.e4162 journal article http://dx.doi.org/10.3897/BDJ.3.e4162 1314-2828-3-4162 Hypoptopoma incognitum Aquino & Schaefer, 2010 Materials Type status: Other material . Occurrence: catalogNumber: 43865 ; recordedBy: Valeria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins ; individualCount: 13 ; otherCatalogNumbers: UFAM:CTGA:14306; UFAM:CTGA:14307; UFAM:CTGA:14308; UFAM:CTGA:14309; UFAM:CTGA:14310; associatedSequences: KP772573; Taxon: scientificName: Hypoptopoma incognitum Aquino & Schaefer, 2010; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Hypoptopoma; specificEpithet: incognitum; scientificNameAuthorship: Aquino & Schaefer, 2010; Location: country: Brazil ; stateProvince: Para ; locality: Lower Nhamunda River ; decimalLatitude: -2.17525 ; decimalLongitude: -56.7115 ; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11 ; Record Level: institutionCode: INPA ; basisOfRecord: PreservedSpecimen Notes Identification to species level follows Aquino and Schaefer (2010) based on the following characters: flattened head with eyes placed ventrolaterally and visible from below; laterally expanded nuchal plate; six pairs of lateral abdominal plates posterior to coracoids; thoracic plates present; three midventral plates between cleithral posterior process and first plate of ventral series; anal shield composed of single plate; second infraorbital laterally contacting to two ventral dermal plates; patch of odontodes present on anterolateral aspect of cleithrum at opening to branchial chamber; and caudal fin with series of around three dark bands (irregular in our specimens). Thirteen individuals were caught by hand from submerged terrestrial vegetation (sampling site NH02). An example of a live specimen is pictured in Fig. 13.