Guntheria (Phyllacarus) derricki (Womersley, 1939):

AUS

Neoschoengastia derricki Womersley, 1939

Euschoengastia derricki, Wharton & Fuller 1952

Schoengastia (Ascoschoengastia) derricki, Womersley 1952

Euschoengastia (Derrickiella) derricki, Womersley & Audy 1957

Guntherana (Derrickiella) derricki, Domrow 1960 a

Derrickiella (Derrickiella) derricki, Vercammen-Grandjean 1965d [ derricki group]

Guntherana (Domrowana) derricki, Vercammen-Grandjean & Langston 1971 a [ similis group]

Guntheria (Phyllacarus) derricki, Domrow & Lester 1985

Syn.: Guntherana (Derrickiella) rex Domrow, 1960 a

Neoschoengastia similis Womersley and Heaslip, 1943