Genitalia of Stegodera angusticollis (Martens, 1875), HBUMM08435 A exposed dart sac apparatus B magnified partial penis and partial epiphallus. Arrow showing a very thin membranous sac wrapping distal half of penis with distal end connecting basal penial retractor muscle.

 
 
  Part of: Chen Z-Y, Lyu Z-T, Wu M (2021) Systematic revision of Stegodera Martens, 1876 (Gastropoda, Stylommatophora, Camaenidae), with description of a new genus. ZooKeys 1059: 1-21. https://doi.org/10.3897/zookeys.1059.68385