This paper describes a new species of the resurrected genus Cryptozetes based on ali instars, and discusses its systematic relationships. Ecological notes are given for this species, as weil as Belba clavasensilla, Camasia cf. horrida, Mycobates sp., Scapheremaeus sp., and Trichoribates ocotlicus, ali associated with epiphytie mosses and lichens of Popocatepetl, Mexico.