Čeleď: Ophichthidae Günther, 1870
Rod: Letharchus Goode & Bean, 1882
hadař tmavý
Goode, G. B. & Bean, T. H. 1882. Descriptions of twenty-five new species of fish from the southern United States, and three new genera, Letharcus, Ioglossus, and Chriodorus. Proceedings of the United States National Museum v. 5 (no. 297): 412-437.