Genital anatomy of Laeocathaica polytyla Möllendorff, 1899, HBUMM05437-spec.1 A general view B cross-section of dart sac at the position arrowed in (A) C, D left and ventral side of dart sac apparatus. Abbreviations: AS – accessory sac; At – atrium; BCD – bursa copulatrix duct; DS – dart sac; DSC – dart sac chamber; DtC – a chamber containing love dart; Ep – epiphallus; FO – free oviduct; MG – mucous glands; P – penis; PR – penial retractor muscle; PS – penial sheath; Va – vagina; VD – vas deferens.