Cheirodon interruptus (Jenyns, 1842)

Mirande, Juan Marcos, 2010, Phylogeny of the family Characidae (Teleostei: Characiformes): from characters to taxonomy, Neotropical Ichthyology 8 (3), pp. 385-568 : 533

Autapomorphies of Cheirodon interruptus :

1. Lateral coverage of dilator fossa by sixth infraorbital (69): (0> 1) leaving a conspicuous naked area in anterior region of dilator fossa. Reversal of synapomorphy 1 of the Cheirodontinae .

2. Number of maxillary teeth (135): (1> 0) only one, or absent. Paralleled in the Astyanax clade, in nodes 284 and 290, and in Aulixidens eugeniae , Coptobrycon bilineatus , Hyphessobrycon bifasciatus , and Iguanodectes geisleri . Some trees: Paralleled in Hasemania nana , Paracheirodon axelrodi , and Parecbasis cyclolepis .

3. Rows of gill rakers on first ceratobranchial (192): (0> 1) two. Reversal of synapomorphy 3 of node 179. Paralleled in the Iguanodectinae , in node 280, and in Brycon orbignyanus , Bryconaethiops macrops , Carlana eigenmanni , Hoplocharax goethei , Hyphessobrycon elachys , Odontostilbe microcephala , Parecbasis cyclolepis , Prodontocharax melanotus , and Rhaphiodon vulpinus . Some trees: Paralleled in node 249 and in Attonitus ephimeros .

4. Posterior margin of cleithrum (234): (1> 0) without concavity ventral to first postcleithrum. Reversal of synapomorphy 2 of node 196. Paralleled in node 298 and in Inpaichthys kerri .

5. 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 , Cyanocharax alburnus , Hollandichthys multifasciatus , Hoplocharax goethei , and Hyphessobrycon luetkenii . Some trees: Paralleled in Hasemania nana and Hyphessobrycon elachys .