Genital anatomy of Laeocathaica distinguenda Möllendorff, 1899 A, B HBUMM05436 C, D HBUMM05417 A general view B–D ventral, left, and apical views of dart sac apparatus. Abbreviations: AO – opening of accessory sac leading to dart chamber; AS – accessory sac; At – atrium; BC – bursa copulatrix; BCD – bursa copulatrix duct; DS – dart sac; DtC – a chamber containing love dart; Ep – epiphallus; MG – mucous glands; P – penis; PAS – proximal accessory sac; PO – opening of proximal accessory sac leading to dart chamber; PR – penial retractor muscle; PS – penial sheath; Va – vagina; VD – vas deferens. Asterisk * indicates the opening of proximal accessory sac.