<i>Astyanax guaricana  </i>(Ostariophysi: Characidae), a new species from the rio Cubatão drainage, Paraná State, Southern Brazil

Oliveira, Carlos A. M.; Abilhoa, Vinícius; Pavanelli, Carla S.

doi:10.1590/S1679-62252013000200007

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Original Articles • Neotrop. ichthyol. 11 (2) • June 2013 • https://doi.org/10.1590/S1679-62252013000200007 copy

Astyanax guaricana (Ostariophysi: Characidae), a new species from the rio Cubatão drainage, Paraná State, Southern Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

In this paper we describe a new species of Astyanax collected in the Atlantic Rainforest, in tributaries to the rio Cubatão, coastal basin of the Paraná State, Brazil. The new species presents a combination of characters that allows its allocation in the A. scabripinnis species complex and differs from congeners by the possession of 18 to 22 branched anal-fin rays; 40 to 43 perforated scales in lateral line; dentary teeth decreasing abruptly in size from the fifth tooth; 15 to 17 circumpeduncular series of scales and two vertical humeral spots

Astyanax ribeirae; >Astyanax scabripinnis; Characiformes; Taxonomy

	Holotype	Paratypes
	Holotype	Range	Mean ± SD

Standard length (mm)	95.6	56.0-95.6	69.5
Percentages of Standard Length
Predorsal distance	50.1	47.9-52.7	50.3 ± 1.2
Prepelvic distance	46.4	46.4-51.4	49.1 ± 1.2
Prepectoral distance	24.2	23.7-26.5	24.7 ± 0.7
Preanal distance	64.5	64.0-70.0	66.5 ± 1.3
Body depth	29.3	29.3-35.7	32.7 ± 1.4
Caudal peduncle depth	10.1	9.0-12.4	10.6 ± 0.6
Caudal peduncle length	16.7	14.1-17.9	16.2 ± 0.9
Dorsal-fin length	22.3	18.1-26.0	22.5 ± 1.7
Pelvic-fin length	15.1	13.8-16.7	15.1 ± 0.8
Pectoral-fin length	17.5	15.4-22.1	18.4 ± 1.5
Anal-fin length	15.9	13.6-18.8	16.2 ± 1.2
Length of anal-fin base	23.1	22.9-27.5	24.4 ± 0.9
Head length	25.6	23.9-26.6	25.1 ± 0.6
Distance from eye to dorsal fin	38.3	35.8-41.4	38.3 ± 1.3
Distance from dorsal-fin origin to caudal-fin origin	49.9	44.3-52.1	49.4 ± 1.7
Distance from pectoral-fin origin to dorsal-fin origin	37.0	37.0-41.1	38.8 ± 1.2
Distance from dorsal-fin origin to anal-fin origin	32.5	32.5-37.5	34.9 ± 1.2
Distance from the end of dorsal-fin base to anal-fin origin	25.5	25.5-29.9	27.8 ± 1.0
Distance from supra-occipital process to pelvic-fin origin	35.0	34.9-39.6	37.7 ± 1.2
Distance from pectoral-fin origin to pelvic-fin origin	23.1	23.1-27.2	25.2 ± 1.0
Distance from pelvic- to anal-fin origins	19.0	17.5-22.2	19.4 ± 1.1
Distance from anal-fin origin to adipose-fin origin	29.5	29.2-33.0	30.8 ± 0.9
Percentages of Head Length
Head depth	104.9	104.9-130.7	116.4 ± 5.3
Snout length	26.0	23.3-27.9	25.9 ± 1.1
Upper jaw length	40.5	38.0-44.3	40.6 ± 1.4
Orbital diameter	30.5	30.5-38.1	35.3 ± 1.6
Interorbital distance	32.7	32.7-40.9	35.8 ± 2.0

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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