Xenodexia, Hubbs, 1950

Lucinda, Paulo Henrique Franco & Reis, Roberto E., 2005, Systematics of the subfamily Poeciliinae Bonaparte (Cyprinodontiformes: Poeciliidae), with an emphasis on the tribe Cnesterodontini Hubbs, Neotropical Ichthyology 3 (1), pp. 1-60 : 45

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https://doi.org/ 10.1590/S1679-62252005000100001

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Xenodexia + Poecilia + Limia +

Pamphorichthys + Micropoecilia + “ Poecilia ” Clade [104]

Diagnosis. Members of this clade share the following uniquely derived and unreversed feature: (1) wide groove dorsal to R5 [121-1**].

Additionally, this clade can be diagnosed by the following not uniquely derived and/or reversed features: (1) preorbital canal present and entirely closed, bearing four pores [9-0]; (2) adult females with first proximal radial of dorsal fin located between neural arches of 10 th and 11 th vertebrae [63-2]; (3) absence of a basal process on first gonactinost [69-0]; (4) fusion of anal-fin posterior median radials (5 th to last one) in adult males to respective proximal radials [77-1]; (5) distal segments of R4p posterior to serrae deeper than wide [115-1*]; (6) keel on posterior ventral surface of R5 formed by the projection of R5 toward R4 [119-1*]; and (7) hypural plate completely fused [131-0].