Neotype ofPseudagrion approximansSelys, 1876 designated to resolve a nomenclatorial confusion in the genusAciagionSelys, 1891 (Odonata: Coenagrionidae)

Abstract

To resolve a prevailing nomenclatorial confusion present in the genus Aciagrion, A. tillyardi Laidlaw, 1919 is placed in synonymy of A. approximans (Selys, 1876). The neotype of “Pseudagrion approximans”, a male specimen from Khasi Hills preserved in Coll. Selys Longchamps at RBINS, is designated to replace the lost holotype, which was an incomplete specimen of unknown provenance. Secondary sources suggest that Selys Longchamps himself had compared the present neotype specimen with the holotype.