Lorryia formosa, originally found in Morocco, was first described by Cooreman in 1958.[2] In his 1980 revision of the family Tydeidae, H.M. André synonymized the genus Lorryia with Tydeus, and Lorryia formosa became Tydeus formosus.[3] André based his revision on the similarities of the chaetotaxy, especially on the legs, but ignored body ornamentation, which is a major character used by other authors. In 1998, Kazmierski revised the Tydeinae subfamily, this time using ornamentation and other features, and reestablished the genus Lorryia.