Ancistrum pernix (MacLennan and Connell, 1931)
Hosts and countries: Lottia digitalis (cited as Acmaea digitalis), USA *. Lottia persona (cited as Acmaea persona), USA **.
(* Also cited as Eupoterium pernix; ** cited as Eupoterium pernix)
References: Lom et al. (1968); Raabe (1970a).