Colpocephalum bicolor Piaget, 1880: 561, pl. 47, fig. 1.
Actornithophilus bicolor (Piaget, 1880); Hopkins & Clay 1952: 21.
Syntypes ♀ lost (Clay 1951a: 176).
Type host: Arenaria interpres (Linnaeus, 1758).
Galápagos host: Arenaria interpres (Linnaeus, 1758).
Galápagos locality: Isla Genovesa.
Galápagos references: This paper.
Other significant references: Clay (1962: 239, 242, pl. 11, fig. 3); Price et al. (2003: 83).
Material examined: 1 female (MONZ).
Remarks: This is the first record of Actornithophilus bicolor from the Galápagos Islands, a louse recorded from the two species of Arenaria only (Price et al. 2003: 83).