TABLE I. Known distribution of the 19 species of west North American Chromodoridinae, from Monterey Bay, California, USA, to the Islas Galápagos, Ecuador. Main data sources are Behrens & Heremosillo, 2005; Camacho-García, Gosliner & Valdés, 2005; and Hermosillo, Behrens & Ríos Jara, 2006. More precise localities are from primary sources such as Bertsch, 1988; Kerstitch & Bertsch, 1988; Bertsch, 2008; Nakamura, 2006; and my personal observations. For occurrences in marine faunal provinces, see Bertsch, 2010.
Note that Mexichromis is the only currently recognized chromodoridine genus whose type species (Chromodoris antonii) has a type locality from the Gulf of California (indeed from all of west North America).
Chromodoris baumanni Bertsch, 1970
Puerto Peñasco, Sonora, northern Gulf of California, to Islas Galápagos; also south to Cancas, Tumbes, Perú
Chromodoris galexorum Bertsch, 1978
Gulf of California Midriff region; Isla Guadalupe, Pacific coast of Baja California (BC); and Catalina Island, California (CA)
Chromodoris macfarlandi Cockerell, 1901
Monterey Bay, CA, to Bahía Magdalena, Baja California Sur (BCS)
Chromodoris marislae Bertsch, in Bertsch, Ferreira, Farmer & Hayes, 1973
Bahía de los Ángeles, BC, Gulf of California Midriff region, to Panamá
Chromodoris norrisi Farmer, 1963
Isla Cedros, Pacific coast of BC; Puerto Peñasco, northern Gulf of California, to Costa Rica
Chromodoris ruzafai Ortea, Bacallado & Valdés, 1992
Islas Galápagos (only record)
Chromodoris socorroensis Behrens, Gosliner & Hermosillo, 2009
Islas Revillagigedo (only record)
Chromodoris sphoni (Marcus, 1971)
La Paz, southern Gulf of California, to Islas Galápagos
Glossodoris dalli (Bergh, 1879)
Islas San Benito, Pacific coast of BC; Puerto Peñasco, northern Gulf of California, to Islas Galápagos
Glossodoris sedna (Marcus & Marcus, 1967)
Puerto Peñasco and Guaymas, Sonora, northern and Midriff region Gulf of California; La Paz, BCS, southern Gulf of California, to Islas Galápagos
Hypselodoris agassizii (Bergh, 1894)
Puerto Peñasco and Puerto Libertad, Sonora (rarely), northern Gulf of California; La Paz, BCS, southern Gulf of California, to Islas Galápagos, and south to Cancas, Peru
Hypselodoris californiensis (Bergh, 1879)
Monterey Bay, CA, to La Paz, BCS; also at Bahía de los Ángeles
Hypselodoris ghiselini Bertsch, 1978
Through entire Gulf of California, from Puerto Peñasco to La Paz (a Gulf endemic)
Hypselodoris lapislazuli (Bertsch & Ferreira, 1974)
Islas Galápagos (only record)
Mexichromis amalguae Gosliner & Bertsch, 1988
Islas Cedros and San Benito, Pacific coast of BC
Mexichromis antonii (Bertsch, 1976)
Mulege and La Paz, central and southern Gulf of California, to Panamá
Mexichromis porterae (Cockerell, 1901)
Monterey Bay, CA, to Bahía Tortugas, BCS
Mexichromis tica Gosliner, Ortea & Valdés, 2004
Costa Rica and Islas Galápagos
Mexichromis tura (Marcus & Marcus, 1967)
From San Carlos, Sonora, and Bahía de los Ángeles, BC, Midriff region Gulf of California, to Panamá
(By: Hans Bertsch, October 2011)