A new species of Tetragonopterus Cuvier, 1816 (Characiformes: Characidae: Tetragonopterinae) from the rio Jari, Amapá, northern Brazil Author Melo, Bruno F. Laboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP, Câmpus de Botucatu). Rubião Jr., s / n, 18618 - 970 Botucatu, SP, Brazil. melo@ibb.unesp.br Author Benine, Ricardo C. Laboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP, Câmpus de Botucatu). Rubião Jr., s / n, 18618 - 970 Botucatu, SP, Brazil. rbenine@ibb.unesp.br Author Mariguela, Tatiane C. Laboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP, Câmpus de Botucatu). Rubião Jr., s / n, 18618 - 970 Botucatu, SP, Brazil. tatimariguela@gmail.com Author Oliveira, Claudio Laboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP, Câmpus de Botucatu). Rubião Jr., s / n, 18618 - 970 Botucatu, SP, Brazil. claudio@ibb.unesp.br text Neotropical Ichthyology 2011 2011-03-31 9 1 49 56 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100002&lng=en&tlng=en journal article 5721 10.1590/S1679-62252011000100002 043afea6-f8cc-40f7-986a-fe898b9514df 1982-0224 4567301

Table 1. Morphometric data of Tetragonopterus carvalhoi. Range and N includes holotype and paratypes. SD = Standard deviation.

	Holotype	Range	Mean	SD	N
Standard length (mm)	36.5	29.6-45.8	36.6	-	57
Percents of Standard length
Greatest body depth	49.7	44.3-52.4	47.8	1.8	57
Snout to dorsal-fin origin	53.0	49.1-56.0	52.4	1.4	57
Snout to pectoral-fin origin	30.9	24.9-33.7	30.4	1.0	57
Snout to pelvic-fin insertion	50.4	46.6-52.8	49.4	1.3	57
Snout to anal-fin origin insertion	66.0	62.9-69.3	66.0	1.5	57
Caudal peduncle depth	11.1	8.6-12.1	10.8	0.6	57
Caudal peduncle length	7.0	4.4-9.4	7.0	1.1	57
Pectoral-fin length	26.0	23.0-28.8	25.3	1.1	56
Pelvic-fin length	20.6	14.5-22.4	20.2	1.3	56
Dorsal-fin length	41.6	34.2-43.0	39.6	2.1	53
Dorsal-fin base	16.0	13.9-17.5	15.6	0.8	57
Anal-fin length	22.4	18.7-28.2	24.9	2.1	50
Anal-fin base	39.1	35.7-41.3	38.4	1.3	57
Orbit to dorsal-fin origin	37.7	32.6-38.0	36.3	1.0	57
Dorsal-fin origin to caudal-fin origin	57.3	53.8-60.6	56.2	1.5	57
Head length	32.1	30.2-34.0	31.7	0.9	57
Head depth	24.3	22.1-25.6	24.0	0.8	57
Percents of Head length
Snout length	20.6	18.3-26.5	21.6	1.6	57
Upper jaw length	45.4	40.7-48.9	45.4	1.5	57
Horizontal orbital diameter	53.3	50.0-57.2	53.2	1.6	57
Least interorbital width	31.3	27.8-33.0	30.6	1.2	57