Author: Eigenmann & Eigenmann, 1889
Remark: See for complementary descriptions of species Regan (1904:256, pl. 14 fig. 7) (redescription of the two syntypes) and Meek and Hildebrand (1916:250); see Kramer and Graham (1976), Graham (1997) and Power (1984a-c, as <i>Ancistrus spinosus</i>) for physiological, ethological and ecological observations.