(Acilius duvergeri)
Acilius duvergeri is a species of beetle in family Dytiscidae. It is found in Algeria, Italy, Morocco, Portugal, and Spain. 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.