Ref. principal | Andrade, B.N. and F. Langeani, 2014 |
Aparência refere-se a | |
Bones in OsteoBase |
órgãos especializados | |
aparência diferente | always different morphology between mature adults |
cores diferentes | |
Notas | Males differ from females by the following characters: conspicuous urogenital papilla immediately posterior to anus (vs. absent in females); dermal flap on dorsal surface of the unbranched thick ray and branched pelvic-fin rays, less developed in branched rays (vs. absent in females); 14-20 teeth in the premaxilla and 13-18 in the dentary (vs. 30-39 and 30-38 in females); smaller mandibullary width 11.8-15.7% (vs. 18.5-21.6% of the head length in females); and shorter and robust teetn (longer and thin in females). |
Características determinantes | |
Forma lateral do corpo | elongated |
Secção transversal | |
Perfil dorsal da cabeça | |
Tipo de olhos | |
Tipo de boca/focinho | |
Posição da boca | |
Type of scales | |
Diagnose |
Neoplecostomus jaguari is distinguished from all congeners by having a conspicuous sexual dimorphism: females with 30-38 teeth in the dentary and 30-39 in the premaxilla, and males with 13-18 and 14- 20 teeth respectively (vs. number of teeth in the premaxilla and dentary equivalent in all other species, except for N. langeanii in the premaxilla); females with larger mandibulary width, 18.5- 21.6% HL, males 11.8-15.7% HL (vs. females and males with mandibulary width /head length equivalent in the other species); females with teeth longer and thin, males with teeth shorter and robust (vs. teeth similar in males and females in all other species, except for N. langeanii in the premaxilla). It further differs from all other species from the upper rio Paraná basin by having a lateronasal plate either forming the lateral border of the nostril or posteriorly displaced (vs. lateronasal plate absent). In addition, it can be diagnosed from other congeners by having four to six plates between the frontal and prefrontal, here called posteronasal plates (vs. one to three in all other species) (Ref. 97853). Description: Dorsal-fin rays ii,7; anal-fin rays i,5; pectoral-fin rays i,6; pelvic-fin rays i,5 (Ref. 97853). |
Facilidade de identificação |
Linhas laterais | interrompido: No |
Escamas na linha lateral | |
Escamas da linha lateral com poros | |
Escamas em séries laterais | |
Fileiras de escamas acima da linha lateral | |
Fileiras de escamas abaixo da linha lateral | |
Escamas em torno do pedúnculo caudal | |
Barbilhões | |
Fissuras branquiais (tubarões/raias apenas) | |
Raios branquiais | |
no membro inferior | |
no membro superior | |
total | |
Vértebras | |
Pré-anal | |
total |
Atributos | |
Número de barbatanas | 1 |
No. de pínulas | Dorsal |
Ventral | |
Total de espinhos | |
Total de raios moles | 9 - 9 |
Barbatana adiposa | absent |
Atributos |
Número de barbatanas | |
Total de espinhos | |
Total de raios moles | 6 - 6 |
Peitoral | Atributos |
espinhos | |
Raios moles 7 - 7 | |
Pélvica | Atributos |
posição abdominal before origin of D1 | |
espinhos | |
Raios moles 6 - 6 |