MilliBase

Gervaisia acutula Latzel, 1884 accepted as Trachysphaera schmidtii Heller, 1858 (additional source)
Gervaisia apenninorum Verhoeff, 1908 accepted as Trachysphaera apenninorum (Verhoeff, 1908) (original description)
Gervaisia corcyraea Verhoeff, 1900 accepted as Trachysphaera corcyraea (Verhoeff, 1900) (additional source)
Gervaisia costata Waga, 1858 accepted as Trachysphaera costata (Waga, 1857) (additional source)
Gervaisia cultrifera Verhoeff, 1906 accepted as Trachysphaera schmidtii Heller, 1858 (additional source)
Gervaisia gibbula Latzel, 1884 accepted as Trachysphaera gibbula (Latzel, 1884) (additional source)
Gervaisia illyrica Verhoeff, 1908 accepted as Trachysphaera schmidtii Heller, 1858 (original description)
Gervaisia multiclavigera Verhoeff, 1898 accepted as Trachysphaera schmidtii Heller, 1858 (additional source)
Gervaisia noduligera Verhoeff, 1906 accepted as Trachysphaera schmidtii Heller, 1858 (additional source)
Polyzonium germanicum illyricum Verhoeff, 1908 accepted as Polyzonium germanicum Brandt, 1837 (original description)

Italy for Gervaisia apenninorum Verhoeff, 1908 
Italy for Gervaisia illyrica Verhoeff, 1908