Synonyms: Foenus arca (heterotypic); Foenus assectator; Foenus incertus (heterotypic); Foenus montanus (heterotypic); Gasteruption abeillei (heterotypic); Gasteruption aberrans (heterotypic); Gasteruption affectator; Gasteruption bakeri (heterotypic); Gasteruption brevicauda (heterotypic); Gasteruption margotae (heterotypic); Gasteruption micrura (heterotypic); Gasteruption nevadense (heterotypic); Gasteruption nigripectus (heterotypic); Gasteruption nitidulum (heterotypic); Gasteruption utahensis (heterotypic); Ichneumon annularis (heterotypic); Ichneumon assectator (homotypic); Trichofoenus breviterebrae (heterotypic); Trichofoenus canadensis (heterotypic)