Kihnichthys , Mcmahan, Caleb D., Matamoros, Wilfredo A., Piller, Kyle R. & Chakrabarty, Prosanta, 2015

Mcmahan, Caleb D., Matamoros, Wilfredo A., Piller, Kyle R. & Chakrabarty, Prosanta, 2015, Taxonomy and systematics of the herichthyins (Cichlidae: Tribe Heroini), with the description of eight new Middle American Genera, Zootaxa 3999 (2), pp. 211-234: 222

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gen. nov.

Genus Kihnichthys  gen. nov., McMahan and Matamoros 2015

( Fig. 9View FIGURE 9 and 10View FIGURE 10)

Inclusive species. K. ufermanni  (type by monotypy)

Diagnosis. Kihnichthys  is diagnosed by the presence of a dark caudal blotch filling the center, posterior portion of the caudal peduncle, as well as the presence of spatulate or chisel-like teeth in the anterior portions of the upper and lower jaws. Species of this genus possess a deep skull and large head with a small mouth. The lower jaw extends slightly beyond the upper jaw. The combination of these characters differentiates this genus from all other herichthyin genera. Vieja  possesses a similar but larger caudal blotch, but also has conical or bicuspid (versus spatulate) teeth. Cincelichthys  gen. nov. possesses spatulate teeth but has a small spot on the caudal peduncle (versus a larger spot in Kihnichthys  ).

Etymology. Gender masculine. The genus is named in honor of Herman A. Kihn, who has spent a lifetime studying the fishes of Guatemala. His work has made invaluable contributions to our understanding of the diversity and distributions of fishes in Guatemala.

Comments. Allgayer (2002) placed this enigmatic cichlid in Vieja  in its original description. Few specimens exist in museum collections for this species, and most material comes from the Río La Pasion system, a tributary to the Río Usumacinta in Peten, Guatemala. Little is known about this cichlid and more comparative material and natural history information are certainly needed.

Material examined. MNHNAbout MNHN 2002 - 1090 [n= 1 (Holotype), Guatemala: Río Pucté], MNHNAbout MNHN 2002 - 1091 [n= 1 (Paratype), Guatemala: Río Pucté], MNHNAbout MNHN 2002 - 1092 [n= 1 (Paratype), Guatemala: Río Pucté].


Museum National d'Histoire Naturelle