Quadraceps major (Kellogg, 1899
Nirmus fissus Var. major Kellogg, 1899a: 15, pl. 2, fig. 2.
Baja California: Tringa sp., no date (Kellogg 1899a).
Quintana Roo: Charadrius wilsonia wilsonia, Isla Mujeres, no date (Klaas 1968). Yucatán: Charadrius nivosus nivosus, 4 mi. S Sisal, no date (Klaas 1968); Charadrius wilsonia wilsonia, 3–13 km. WSW Sisal, no date (Klaas 1968).
Note: The host given by Kellogg (1899a) as “ Tringa sp. ” is regarded as erroneous for a species of Quadraceps belonging to a group regularly found on species of Charadrius (see Hopkins & Clay 1952; Price et al. 2003). Specimens of Q. major were identified by Klass (1968) as “ Quadraceps assimilis major ”.