TY - JOUR
T1 - A new species of Hemibrycon (Teleostei
T2 - Characiformes: Characidae) from the río Ucayali drainage, Sierra del Divisor, Peru
AU - Bertaco, Vinicius A.
AU - Malabarba, Luiz R.
AU - Hidalgo, Max
AU - Ortega, Hernán
PY - 2007
Y1 - 2007
N2 - A new characid species, Hemibrycon divisorensis, is described from the río Ucayali drainage, Loreto, Peru. The new species is distinguished from all Hemibrycon species by the presence of a wide black asymmetrical spot covering base of caudal-fin rays and extending along entire length of caudal-fin rays 9 to 12-13 (except from H. surinamensis), and a black band in the lower half of the caudal peduncle extending from the region above the last anal-fin rays to the caudal-fin base. Furthermore, it is distinguished from most species of the genus by the number of scale rows below the lateral line (4-5 vs 5-9), except H. jabonero, H. microformaa, H. orcesi, and H. surinamensis. It differs from these species by scale and fin ray counts and color pattern. The lack of a supraorbital in Hemibrycon species is discussed and confirmed.
AB - A new characid species, Hemibrycon divisorensis, is described from the río Ucayali drainage, Loreto, Peru. The new species is distinguished from all Hemibrycon species by the presence of a wide black asymmetrical spot covering base of caudal-fin rays and extending along entire length of caudal-fin rays 9 to 12-13 (except from H. surinamensis), and a black band in the lower half of the caudal peduncle extending from the region above the last anal-fin rays to the caudal-fin base. Furthermore, it is distinguished from most species of the genus by the number of scale rows below the lateral line (4-5 vs 5-9), except H. jabonero, H. microformaa, H. orcesi, and H. surinamensis. It differs from these species by scale and fin ray counts and color pattern. The lack of a supraorbital in Hemibrycon species is discussed and confirmed.
KW - Amazon basin
KW - Carlastyanax
KW - Fin hooks
KW - Neotropical
KW - Supraorbital
KW - Taxonomy
UR - http://www.scopus.com/inward/record.url?scp=35348839608&partnerID=8YFLogxK
U2 - 10.1590/S1679-62252007000300003
DO - 10.1590/S1679-62252007000300003
M3 - Artículo
AN - SCOPUS:35348839608
VL - 5
SP - 251
EP - 257
JO - Neotropical Ichthyology
JF - Neotropical Ichthyology
SN - 1679-6225
IS - 3
ER -