Color and shape correspond to clades in Figs. 3 and 4. A1- Princeton; A2-Coyote Point; A3-Harris Point; A4- Orizaba; A5-NW Talcott; A6-China Point; A7-Otter Harbor; A8-Fossil Reef; B1-Industrial Area; B2-Little Harbor; B3-Ithsmus Cove; B4-Descanso; B5-Long Beach; B6-San Diego; B7-Refugio; B8-Malaga Cove; B9-Cabrillo; C1-San Diego; C2-Corona Ensenada; C3- Ford Point; C4-East Point; C5-Johnsons Lee; C6-Side Frenchy's; C7-Sandy Beach; C8-Smugglers Cove; C9-Willows; C10-Fraser Cove; C11-Scorpion; C12-Frenchys; D1-Bufadora Ensenada; D2-San Quintin; D3-Punta Baja; D4-Arroyo Ancho; D5-Tomatal; E1-Cedros Is. (2 localities); E2-Punta Eugenia; E3- El Chevo, El Queen, and Malarrimo; E4-Tortugas; E5-Bahía Asuncion; E6-San Hipolito; E7-Punta Abreojos; E8-Puerto San Carlos; F1-Vallarta; F2-Careyes; S1-Loreto; S2-Cajete, San Evaristo; S3-San Brunito; S4-San Cosme; S5-Punta Chivato and Mulege; S6- Bahía Concepción: Bahía Concepcion N, Punta Sueño, Buenaventura, Requeson, Bahía Armenta, Bahía Concepcion S; S7-San Lucas and Santa Rosalia; S8-Bahía Kino; S9-San Carlos; S10-Guaymas; S11-La Paz; S12-IslaEspiritu Santo (2 localities) and Isla Partida; S13-Isla Cerralvo (3 localities); S14-Ensenda de los Muertos and Barriles; S15-Frailes; S16-Cabo San Lucas and El Arco; S17-Barra Potosi; S18-Ixtapa, Zihuatanejo; S19-Carrizalillo; S20-Manzanillo and Boquita; S21-Punta Mita; S22-Isla Coral; S23-San Blas, Platanitos, and Aticama; S24-Mazatlan (2 localities); S25-Topolobampo; S26-Cabo Pulmo; S27-San Nicolas; N1-San Bruno; N2-Santa Rosalia; N3-Isla San Pedro Martir; N4-San Francisquito; N5-Bahía de los Angeles; N6-Isla Angel de la Guarda (Viborita); N7-Isla Tiburon (3 localities), Isla Cholludo, Isla Datil; N8-Isla San Esteban; N9-San Rafael; N10-San Luis Gonzaga; N11-Puertecitos; N12-San Felipe; N13-La Cholla; N14 Puerto Peñasco; N15-Puerto Lobos; N16-Puerto Libertad. * denotes Guerrero Negro Lagoon; black circle denotes San Ignacio Lagoon.