hudsonius, Hippocampus DeKay [J. E.] 1842:322, Pl. 53 (fig. 171) [Zoology of New-York; ref. 1098] New York, U.S.A. Syntypes: New York State coll. (whereabouts unknown). •Synonym of Hippocampus erectus Perry 1810 -- (Smith 1986:419 [ref. 22186], Lourie et al. 1999:91 [ref. 23993], Castro-Aguirre et al. 1999:235 [ref. 24550], Smith-Vaniz et al. 1999:190 [ref. 25013], Schmitter-Soto et al. 2000:155 [ref. 27754], Kuiter 2009:18 [ref. 30404], Silveira et al. 2014:320 [ref. 33493], Lourie et al. 2016:24 [ref. 34632]). Current status: Synonym of Hippocampus erectus Perry 1810. Syngnathidae: Syngnathinae. Habitat: marine.