New species of <i><i>Pyrrhulina</i></i> (Teleostei: Characiformes: Lebiasinidae) from the eastern Amazon, Pará, Brazil

Vieira, Lorena S.; Netto-Ferreira, André L.

doi:10.1590/1982-0224-20190013

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Original article • Neotrop. ichthyol. 17 (2) • 2019 • https://doi.org/10.1590/1982-0224-20190013 copy

New species of Pyrrhulina (Teleostei: Characiformes: Lebiasinidae) from the eastern Amazon, Pará, Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

A new species of Pyrrhulina is described based on 60 specimens from tributaries of the rio Amazonas: rio Anapu, rio Capim, rio Guamá and rio Xingu, and coastal drainages in the state of Pará, Brazil. The new species differs from all congeners by having the primary stripe (the horizontal stripe of dark pigmentation extending posteriorly from the snout) terminating at the distal edge of the opercle. In all other species of Pyrrhulina, the primary stripe is either restricted to the snout or continues beyond the head (i.e. at least the anteriormost four scales of the lateral line series).

Keywords:
Color pattern; Freshwater fish; Pyrrhulininae; Taxonomy; Teleostei

Paratypes	Holotype	n	Males					Females
Paratypes	Holotype	n	Range			Mean	SD	Range			Mean	SD
SL	54.4	60	39.7	-	57.7	47.1		12.3	-	57.7	34.3
Depth dorsal fin origin	24.3	53	21.5	-	29.0	24.9	1.4	21.9	-	27.7	24.5	1.4
Snout to anal fin origin	75.5	53	72.4	-	77.7	75.2	1.4	74.0	-	78.5	76.5	1.2
Snout to pelvic fin origin	49.4	53	47.1	-	53.7	50.6	1.7	47.7	-	54.5	52.1	1.4
Snout to dorsal fin origin	57.4	53	56.9	-	62.3	59.1	1.7	59.1	-	62.8	60.7	0.9
Dorsal fin origin to caudal base	44.8	53	39.9	-	45.6	42.6	1.5	39.7	-	44.2	41.7	1.1
Dorsal fin length	33.9	52	26.7	-	34.1	29.9	2.2	21.6	-	30.5	25.7	1.8
Length caudal peduncle	13.3	53	11.9	-	15.4	13.4	0.9	11.7	-	18.9	14.0	1.5
Depth caudal peduncle	13.9	52	12.9	-	16.1	14.3	0.9	11.0	-	13.8	12.8	0.6
Anal fin length	24.1	53	20.1	-	25.1	23.4	1.3	18.0	-	23.2	20.6	1.2
Anal fin base	11.9	53	10.8	-	14.0	12.3	0.7	8.3	-	13.4	10.3	1.2
Pelvic to anal fin origin	28.9	53	23.1	-	28.9	25.9	1.4	22.8	-	29.9	25.2	1.5
Pelvic fin length	25.7	53	19.4	-	27.7	23.6	2.4	17.2	-	22.5	19.9	1.2
Pectoral to pelvic fin origin	27.2	53	25.4	-	29.1	27.0	1.0	23.3	-	31.6	26.9	1.8
Pectoral fin length	22.3	53	20.7	-	24.9	22.5	1.2	17.0	-	25.8	22.6	1.7
Snout to pectoral fin origin	24.1	53	22.2	-	26.3	24.1	0.8	23.8	-	28.4	26.2	1.4
Head length	26.0	53	23.8	-	28.9	25.9	1.1	24.9	-	29.6	27.2	1.4
Horizontal eye diameter	29.4	53	28.2	-	34.0	31.3	1.7	29.1	-	39.4	33.2	2.2
Distance snout to eye	31.4	53	28.1	-	32.2	30.6	1.1	25.0	-	33.2	29.5	2.2
Interorbital distance	38.8	53	36.7	-	42.5	39.4	1.5	35.7	-	43.7	39.5	1.8
Upper jaw length	20.5	53	18.7	-	26.6	21.9	2.4	16.6	-	24.2	20.4	2.0
Lower jaw length	36.5	53	26.4	-	36.5	32.7	2.4	26.6	-	44.0	32.1	3.2

Sociedade Brasileira de Ictiologia Neotropical Ichthyology, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Universidade Estadual de Maringá., Av. Colombo, 5790, 87020-900, Phone number: +55 44-3011-4632 - Maringá - PR - Brazil
E-mail: neoichth@nupelia.uem.br

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[1] Edited by

Brian Sidlauskas