Balticobaetisca bispinata sp. nov., Baltic amber (Eocene). A–C Holotype, male subimago, coll. CCHH, BaB 1373/1. D Paratype, male subimago, SMF Be 411. A Right forewing in dorsal view; B right hind wing in dorsal view; C genitalia in ventral view. Arrow points to V-shaped cleft separating penis lobes; D genitalia in ventrolateral view. Arrow marks V-shaped cleft separating penis lobes. For further details of wing venation of Baetiscidae see also Staniczek and Bechly (2002) and Kluge (2004).

  Part of: Staniczek AH, Storari AP, Godunko RJ (2022) Revised systematics, phylogeny, and paleontology of the mayfly family Baetiscidae (Insecta: Ephemeroptera). Arthropod Systematics & Phylogeny 80: 389-409.