| Réf. Princ. | Martins, F.O., H.A. Britski and F. Langeani, 2014 |
| Ressemble à | |
| Bones in OsteoBase |
| Organes spécialisés | |
| Apparence différente | |
| Couleurs différentes | |
| Remarques | Males are distinguished from females by the following characters: conspicuous urogenital papilla immediately posterior to anus; expanded flap of skin on dorsal surface of the first pelvic-fin ray; tip of adpressed pelvic fin generally reaching anal-fin origin; nasal chamber frequently wider than in females (7.5-12.8% HL, mean 10.5% in males vs. 6.7-10.6% HL, mean 8.9% in females). |
| Éléments remarquables | |
| Profil du corps | |
| Section transverse | |
| Profil dorsal de la tête | |
| Type d'yeux | |
| Type de bouche/museau | |
| Position de la bouche | |
| Type of scales | bony plates or armour |
| Diagnose |
Pseudotothyris janeirensis is distinguished from all congeners by possessing dorsal-fin spinelet (vs. absent); transverse dark saddles on the dorsum absent (vs. present); subocular cheek plate always absent (vs. generally present); and odontodes on lateral plates aligned in well-defined series (vs. randomly distributed). It can be diagnosed from Pseudotothyris obtusa by having abdomen almost entirely naked, except for one to three lateral abdominal plates and one to two preanal plates (vs. abdomen partially or totally covered by scattered plates); 31-35 teeth on upper pharyngeal toothplate (vs. 20-30); and 18-23 teeth on ceratobranchial 5 (vs. 12-15 ). It differs differs from Pseudotothyris ignota by having the anterior margin of snout completely covered by odontodes (vs. anterior margin of snout with an odontode-free band) (Ref. 116384). |
| Facilité d'identification |
| Lignes latérales | Interrompu(e)(s): No |
| Écailles sur la ligne latérale | |
| Écailles perforées de la ligne latérale | |
| Écailles en série latérale | |
| Rangées d'écailles au-dessus de la ligne latérale | |
| Rangées d'écailles au-dessus de la ligne latérale | |
| Écailles autour du pédoncule caudal | |
| Barbillons | |
| Fentes branchiales (requins et raies uniquement) | |
| Branchiospines | |
| sur le membre inférieur | |
| sur le membre supérieur | |
| Total | |
| Vertèbres | |
| préanal(e) | |
| Total | 28 - 28 |
| Attributs | no striking attributes |
| Nombre de nageoires | 1 |
| Nombre de pinnules | Dorsal |
| Ventral | |
| Total d'épines | |
| Total de rayons mous | 8 - 9 |
| Nageoire adipeuse | absent |
| Attributs |
| Nombre de nageoires | |
| Total d'épines | |
| Total de rayons mous | 5 - 6 |
| Pectorale(s) | Attributs |
| Épines | |
| Rayons mous 6 - 8 | |
| Pelvienne(s) | Attributs |
| position abdominal before origin of D1 | |
| Épines | |
| Rayons mous 6 - 6 |