Megathymus yuccae louiseae H. Freeman, 1963;  Comments: S-C TX (Val Verde, Kinney Cos) to NE Mexico (COAH, NL) TL: USA (Tx).

Megathymus yuccae louiseae ♀ USA: TEXAS: Val Verde Co., Amisted Rec. Area, 12 mi. W Del Rio ex larva 27-II-75, foodplant: Yucca thompsoniana [MGCL]