| abstract | A new subgenus, Zosteridionis, is proposed for five species, including the type species Hexidionis deserti, n.sp., type locality 3 mi. SE Needles, San Bernardino Co., California, off Dipodomys m. merriami. The subgenus Hexidionis consists of five species including, Hexidionis macropus n.sp. from La Burrera, Baja California Sur, Mexico off Peromyscus eremicus |