Deuterodon langei, Travassos, 1957

Mirande, Juan Marcos, 2010, Phylogeny of the family Characidae (Teleostei: Characiformes): from characters to taxonomy, Neotropical Ichthyology 8 (3), pp. 385-568 : 502

Autapomorphies of Deuterodon langei :

1. Expansion of lamellar portion of maxilla just posterior to toothed region (97): (0> 1) very pronounced. Paralleled in node 232. Some trees: Paralleled in Paracheirodon axelrodi .

2. Articulation between ventral margin of metapterygoid and posterodorsal margin of quadrate (155): (0> 1) present. Paralleled in nodes 176 and 299 and in Heterocharax macrolepis , Pristella maxillaris , Roeboides descalvadensis , and Thoracocharax stellatus .

3. Distribution of denticles on gill rakers (202): (0> 1) along entire surface of gill rakers. Paralleled in node 269 and in Astyanax correntinus , Hoplias cf. malabaricus , Hyphessobrycon eques , and Pristella maxillaris .

4. Development of transverse process of neural arch of third vertebra (219): (0> 1) well developed and extending beyond anterior margin of tripus. Paralleled in node 302, and in Agoniates anchovia , Cyanocharax alburnus , Engraulisoma taeniatum , Hemiodus cf. thayeria , Roeboexodon geryi , and Thayeria obliqua. Some trees: Paralleled in Microschemobrycon casiquiare and Parecbasis cyclolepis .

5. Process of scapula forming anterior border of scapular foramen (244): (0> 1) absent. Paralleled in nodes 193 and 252 and in Aphyodite grammica , Hoplias cf. malabaricus , Hyphessobrycon herbertaxelrodi , Leporinus striatus , Odontostilbe paraguayensis , and Thayeria obliqua.