Synonyms: Anelaphus arctum; Anelaphus defectus; Anelaphus medialis; Anelaphus medialis canadensis; Anelaphus medialis densicollis; Anelaphus molliculus; Anelaphus oblitum; Anelaphus pulverulentum; Callidium pulverulentum; Elaphidion arctum; Elaphidion oblitum; Elaphidion parallelum; Elaphidion parallelus; Elaphidion pulverulentum (heterotypic); Elaphidion pulverulentus; Elaphidionoides parallelus; Hypermallus arctus; Hypermallus defectus; Hypermallus medialis (heterotypic); Hypermallus medialis canadensis (heterotypic); Hypermallus medialis densicollis (heterotypic); Hypermallus molliculus; Hypermallus oblitus; Hypermallus parallelus; Hypermalus medialis