Phyllotoma tormentillae Phyllotoma Fenella? agrimoniae Fenella pygmaea Checklist of British and Irish Hymenoptera - Sawflies, ' Symphyta' Liston, Andrew D. Knight, Guy T. Sheppard, David A. Broad, Gavin R. Livermore, Laurence Biodiversity Data Journal 2014 2 1168 1168 Westwood, 1840 Westwood 1840 Gastropoda Cerithiidae Fenella CoL Animalia Fenella nigrita 0 1168 Mollusca species nigrita   Phyllotoma tormentillae(Healy, 1868, Phyllotoma)  Fenella? agrimoniaeBrischke, 1888  Fenella pygmaea(Klug, 1816): Healy, 1869 misident.  Distribution England, Scotland, Wales, Ireland  Notes  Benson (1952)noted that biological differences possibly indicate the presence of two taxa under this name in the British Isles. This problem has still not been investigated.