Tatia aff. musaica Royero, 1992

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

Tatia aff. musaica Royero, 1992

Materials

Type status: Other material. Occurrence: catalogNumber: 43883 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 3; otherCatalogNumbers: UFAM:CTGA:14421; UFAM:CTGA:14038; UFAM:CTGA:14039; Taxon: scientificName: Tatia musaica Royero, 1992; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Auchenipteridae; genus: Tatia; specificEpithet: musaica; scientificNameAuthorship: Royero, 1992; Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.71782; decimalLongitude: -57.36856; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; identificationQualifier: aff. musaica; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 43875 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 4; otherCatalogNumbers: UFAM:CTGA:14507; UFAM:CTGA:14508; UFAM:CTGA:14040; UFAM:CTGA:14041; associatedSequences: KP772597; Taxon: scientificName: Tatia musaica Royero, 1992; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Auchenipteridae; genus: Tatia; specificEpithet: musaica; scientificNameAuthorship: Royero, 1992; Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.84123; decimalLongitude: -57.07212; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; identificationQualifier: aff. musaica; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 43867 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 9; Taxon: scientificName: Tatia musaica Royero, 1992; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Auchenipteridae; genus: Tatia; specificEpithet: musaica; scientificNameAuthorship: Royero, 1992; Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -2.02386; decimalLongitude: -56.78235; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; identificationQualifier: aff. musaica; Event: eventDate: 2013-11; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 14031; 14032; 14033 ; recordedBy: Tomas Hrbek; José Gregorio Martínez; Joiciane Gonçalves Farias; individualCount: 3; associatedSequences: KP772569; KP772570; KP772571; Taxon: scientificName: Tatia musaica Royero, 1992; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Auchenipteridae; genus: Tatia; specificEpithet: musaica; scientificNameAuthorship: Royero, 1992; Location: country: Colombia; stateProvince: Guainia; locality: Lower Atabapo River ; decimalLatitude: 4.02883; decimalLongitude: -67.70458; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2014-05; Record Level: institutionCode: UFAM; collectionCode: CTGA; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 35086 ; recordedBy: Raphael Leitão; Henrique Lazzarotto; individualCount: 36; Taxon: scientificName: Tatia musaica Royero, 1992; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Auchenipteridae; genus: Tatia; specificEpithet: musaica; scientificNameAuthorship: Royero, 1992; Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -2.00111; decimalLongitude: -56.51889; geodeticDatum: WGS84; Identification: identifiedBy: Raphael Leitão; Rupert A. Collins; identificationQualifier: aff. musaica; Event: eventDate: 2009-09-22; Record Level: institutionCode: INPA; basisOfRecord: PreservedSpecimen

Notes

Identification as a possibly undescribed species similar to Tatia musaica , follows Royero (1992), Sarmento-Soares and Martins-Pinheiro (2008), Vari and Ferraris (2013), and Vari and Calegari (2014) based on the following characters: strongly contrasting dorsal (black) and ventral (white) colour pattern, with irregular lateral pigmentation extending nearly to ventrum; pigmentation extending onto caudal fin lobes as medial stripes; pigmented dorsal-fin spine; bifid third nuchal plate; and long post-cleithral process surpassing the nuchal plates.

Specifically, our specimens differ from T. musaica as described by Royero (1992) (images can be found on the All Species Catfish Inventory Web page; http://acsi.acnatsci.org/base/image_list.html?mode=genus&genus=Tatia) in at least two aspects: unpigmented area dorso-posteriorly to the orbit (slightly elongated and smaller than orbit diameter); and third nuchal plate larger and unpigmented (including some of the surrounding skin). Our examination of topotypic T. musaica material from the Río Atabapo of Colombia/Venezuela confirm these differences, in addition to a 5.2% COI sequence divergence (32 mutations over 615 bp). Our Nhamundá specimens are also similar to Tatia melanoleuca as described by Vari and Calegari (2014), but differ from this species mainly in respect to the distribution of dark pigmentation on the caudal fin, dorsal-fin spine, and lateral surfaces.

Sixteen individuals were caught either by hand from their lodgements in woody substrates (sampling sites NH04 and NH08), or more effectively using a hand net at the surface after attracting insects-on which they were feeding-with a light (sampling site NH12); under such conditions they appeared abundant on the lower Nhamundá. An example of a live specimen is pictured in Fig. 6.

Two lots of Centromochlus from the INPA fish collection were collected from the Rio Nhamundá. Both were out on loan at the time of this study and could not be examined here, but the first-36 specimens of Centromochlus sp. "orca" (INPA 35086)-contains a fish clearly conspecific with our T. aff. musaica based on the assigned tag name, and so we have included this lot under our T. aff. musaica . We were unsure of the identity of the second-a record of a Centromochlus sp. "pigmento" (INPA 35087) referred to by Sarmento-Soares et al. (2013) as Centromochlus sp.-and so have not included this species in the checklist.