Children (20 direct children, 20 direct and indirect children):
Trephionus nikkoensis
Trephionus babai
Trephionus chujoi
Trephionus igai
Trephionus karosai
Trephionus kinoshitai
Trephionus kyushuensis
Trephionus microphthalmus
Trephionus mikii
Trephionus obscurus
Trephionus shibataianus
Trephionus sordidatus
Trephionus subcavicola
Trephionus takakurai
Trephionus abiba
Trephionus bifidilobatus
Trephionus cylindriphallus
Trephionus inexpectatus
Trephionus niumontanus
Trephionus kurosai