Alycaeus senyumensis sp. n. A–E Shell of holotype, BOR/MOL 12965 F–H Close up of shell of holotype, BOR/MOL 12965 I–L Operculum of paratype, BOR/MOL 6880 M–Q Shell of paratype, operculum of BOR/MOL 12966. Scale bars: A–E, F, G, M–Q 1 mm; H, I–L 0.5 mm. All photographs by Junn Kitt Foon.