Plusaetis mathesoni (Traub, 1950) .

Amealco, 6.24 km W: 1 male, 7/7/1982, ex Peromyscus levipes levipes (082 JCM); Carr. Amealco, 9 km N: 3 females, 13/5/1984, ex Peromyscus difficilis saxicola (1361MQ); Peñamiller: 1 female, 19/9/1983, ex Peromyscus difficilis saxicola (1183MQ); Pinal de Amoles, 1 km S: 10 females, 5/7/ 1982, ex Peromyscus levipes levipes (080 JCM); 1 male, 8/7/1983, (1017MQ); 1 male, 30/9/1983, ex Peromyscus difficilis saxicola (1194MQ); Pinal de Amoles, 1 km SW: 9 females, 1/2/1983, ex Reithrodontomys megalotis amoles (486MQ); 1 male, 31/1/ 1983, ex Peromyscus levipes levipes (478MQ) .