“[Synonymical note: Rhagonycha angulatocollis A. Costa, 1858 = Rhagonycha nigriceps (Waltl, 1838) (Coleoptera, Cantharidae)]”, Nat Hist Sci, vol. 3, no. 1, pp. 60–62, Jun. 2016, doi: 10.4081/nhs.2016.283.