Amiarus (Amiarus) dimidiatus Hendrix & Bartlett 2025, new combination

Amiarus (Amiarus) dimidiatus (Berg, 1879) new combination Oliarus dimidiatus Berg, 1879 b: 184 (original description). Remarks. Amiarus dimidiatus is a morphologically distinctive species originally described from four localities in Argentina. Observations on iNaturalist suggest its presence in Brazil and Uruguay, aligning with its description. However, the male terminalia of this species have never been formally described, making specimen-based verification of these records necessary. Examination of male specimens from Argentina, along with unpublished illustrations of a syntype specimen (Mead, unpublished), reveal a close affinity with other species placed in Amiarus (Amiarus) gen. et subgen. nov. (specifically A. deserticola, A. kindli, and A. oryzicola), supporting their placement together in Amiarus subgen. nov.