Mainland Italy / Sardegna / Sicilia
REMARKS: syn. Obisium megachelum Amary, 1840; Chthonius rayi L. Koch, 1873; Chthonius parvioculatus Beier, 1930; Chthonius tamaninii di Caporiacco, 1952; res. syn. Chthonius rhodochelatus Hadži, 1930 (Gardini 2021. Zootaxa 4987(1): 1-131).