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
Batrochoglanis villosus (Eigenmann, 1912)
Materials
Type status:
Other material
. Occurrence: catalogNumber:
43882
; recordedBy:
Valeria
Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins
; individualCount:
4
; otherCatalogNumbers: UFAM:CTGA:14497; UFAM:CTGA:14498; UFAM:CTGA:14499; UFAM:CTGA:14500; associatedSequences: KP772594; Taxon: scientificName: Batrochoglanis villosus (Eigenmann, 1912); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Pseudopimelodidae; genus: Batrochoglanis; specificEpithet: villosus; scientificNameAuthorship: (Eigenmann, 1912); Location: country:
Brazil
; stateProvince:
Para
; 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
Notes
Identification to species level follows
Shibatta and Pavanelli (2005)
,
Mees (1974)
and
Eigenmann (1912)
based on the following characters: lower jaw not projecting beyond upper jaw; head large and rounded in dorsal view; head and body with numerous small papillae; insertion of pelvic fin though vertical of posterior base of dorsal; short caudal peduncle; rounded caudal fin; post-cleithral process short, not reaching vertical through dorsal fin origin; axillary pore absent; lateral-line canal terminating on caudal peduncle; premaxillary dentigerous plates with lateral margins posteriorly prolonged; colour brown, with dark mottled appearance; and caudal fin with dark dots irregularly distributed.
An important inconsistency should be noted regarding the caudal fin shape.
Eigenmann (1912)
described the caudal fin of
B. villosus
as being "notched", but figured a specimen with a rounded caudal fin (
Mees 1974
). The photograph of the holotype (FMNH 53219) on the All Species Catfish Inventory Web page (http://acsi.acnatsci.org/base/image_list.html?mode=genus&genus=Pseudopimelodus) shows a fish lacking most of the caudal fin. The specimens we collected had a rounded caudal fin.
Four individuals were caught by hand from their lodgements in woody substrates at the margin of the main river (sampling site NH04). An example of a live specimen is pictured in Fig. 32.