scarce lesser diving beetle

Acilius is a holarctic genus of diving beetles in the family Dytiscidae and typically has a life cycle that is univoltine. Despite the prevalence of some species, one species, A. duvergeri, is listed as vulnerable on the IUCN Red List.

Acilius est un genre d'insectes de l'ordre des coléoptères, de la famille des dytiscidés, de la sous-famille des dytiscinés.

Acilius canaliculatus es una especie de coleópteros adéfagos de agua dulce perteneciente a la familia Dytiscidae. Se encuentran en Eurasia. ​ sinonimia Acilius caliginosus Curtis, 1825 Acilius dispar Lacordaire, 1835 Acilius kotulae Ulanowski, 1884 Acilius laevisulcatus Motschulsky, 1845 Acilius subimpressus Motschulsky, 1845 Acilius sulcatoaffinis (Hummel, 1822) Acilius sulcipennis (C.