N.B.: declared a nomen dubium by Lopardo et al., 2026: 105.

Nomina dubia:

Fonteferrea estageli Marc & Déjean, 2026: 23 f. 1A-B, 2A-B, 3A-C, 4, 5A-F, 6A-B, 8B, D, 9B (j, France) -- Lopardo et al., 2026: 107

Fonteferrea minutissima Wunderlich, 2023: 20, f. 26-29, photo 2 (j, Portugal) * -- Lopardo et al., 2026: 105