Internal drawings of left valves of Rugalucina and Pusillolucina species. Not to scale.
Part of: Taylor JD, Glover EA (2019) Unloved, paraphyletic or misplaced: new genera and species of small to minute lucinid bivalves and their relationships (Bivalvia, Lucinidae). ZooKeys 899: 109-140. https://doi.org/10.3897/zookeys.899.47070