O. (A.) alienus Orchymont 1929

Based on the original description, this species, which was described from Kenya, is another member of the O. (A.) tenuipunctus species group. Among the specimens available for this study from Kenya are two species in the O. (A.) tenuipunctus species group. Based on the description published by Orchymont (original 1929, redescription 1948), one of these species has been determined to be O. (A.) alienus Orchymont. This decision needs to be verified by examining, including the male genitalia, type specimens of O. (A.) alienus Orchymont, which should be in the Orchymont collection at the Brussels Museum (RBINS).