Hyphessobrycon luetkenii (Boulenger, 1887)

Mirande, Juan Marcos, 2010, Phylogeny of the family Characidae (Teleostei: Characiformes): from characters to taxonomy, Neotropical Ichthyology 8 (3), pp. 385-568 : 513

Autapomorphies of Hyphessobrycon luetkenii :

1. Subtemporal fossa (18): (1> 0) medially extended to middle exoccipital. Paralleled in node 211.

2. Length of laterosensory canal of dentary (79): (0> 1) reduced or absent. Paralleled in node 279 and in Aphyocharax nattereri , Bryconamericus rubropictus , Hyphessobrycon elachys , Nantis cf. indefessus , and Thayeria boehlkei.

3. Number of branched pelvic-fin rays (258): (1> 0) six or less. Paralleled in the Aphyocharacinae , in nodes 220, 236, 280, and 302, and in Axelrodia lindeae , Cheirodon interruptus , Cyanocharax alburnus , Hollandichthys multifasciatus , and Hoplocharax goethei . Some trees: Paralleled in Hasemania nana and Hyphessobrycon elachys .

4. Pelvic-fin bony hooks in adult males of species bearing hooks on fins (309): (1> 0) absent. Paralleled in Creagrutus anary , Hyphessobrycon eques , Phenacogaster tegatus , Pseudocorynopoma doriae , and Stethaprion erythrops . Some trees: Paralleled in Markiana nigripinnis and Psellogrammus kennedyi .

5. Pectoral-fin bony hooks in adult males of species bearing hooks on fins (310): (0> 1) present. Paralleled in node 268 and in Astyanax cf. asuncionensis , A. lineatus , Bario steindachneri , Bryconamericus cf. iheringii , B. rubropictus , Hyphessobrycon socolofi , and Phenacogaster tegatus .

6. Dorsal-fin bony hooks in adult males of species bearing hooks on fins (311): (0> 1) present. Paralleled in nodes 248 and 268 and in Astyanax cf. asuncionensis , A. lineatus , Bario steindachneri , Bryconamericus rubropictus , Hyphessobrycon socolofi , Nematocharax venustus , and Probolodus heterostomus .

7. Caudal-fin bony hooks in adult males of species bearing hooks on fins (312): (0> 1) present. Paralleled in node 268 and in Acrobrycon tarijae , Astyanax cf. asuncionensis , A. lineatus , Bario steindachneri , Hyphessobrycon socolofi , and Probolodus heterostomus .

8. Position of anal-fin bony hooks of adult males (316): (0> 2) asymmetrically disposed and irregularly arranged. Some trees: Paralleled in node 295.