| abstract | The genus Xenodontacarus, nomen novum, is proposed for xenacarus Greenberg, 1951 (non Kishida, 1925), and consists of Acomatacarus (Xenacarus) Plumosus Greenberg, 1951, type species Acomatacarus brevicalcar Brennan & Jones, 1954, and 2 new species. Described are Xenodontacarus folius, n. sp., off Peromyscus boylii from Sinaloa, Mexico and X. serratus, n. sp., off Artibeus lituratus, also from Sinaloa, Mexico. |