Seven new species of Teinobasis Kirby from Papua New Guinea (Odonata: Coenagrionidae)

Damselflies of the genus Teinobasis Kirby, 1890 reach their greatest diversity on mainland New Guinea and adjacent islands. Here we describe seven new Teinobasis species from central and western Papua New Guinea (PNG): Teinobasis aurantiaca sp. nov., T. caelestis sp. nov., T. fragillima sp. nov. and T. glossa sp. nov. from the Purari River basin in southern PNG, Teinobasis wau sp. nov. and T. marginata sp. nov. from the Kikori and Fly-Strickland River basins respectively in southern PNG, and Teinobasis livida sp. nov. from the upper Sepik River basin in northwestern PNG. We also describe the hitherto unknown female of T. debeauxi Lieftinck, 1938 and a previously undescribed character that is useful for distinguishing males of T. debeauxi from similar congeners. Diagnostic characters of the males and females (if available) are illustrated, comparisons with similar congeners are presented, and habitat photos are provided.