Geophilus impressus is a species of soil centipede in the family Geophilidae found all over Europe, and has also been recorded in North Africa (Maghreb, Morocco, and Tunisia).
It lives frequently in endogean habitats; in Sardinia it's found mostly in Quercus ilex woods, but also in Mediterranean shrub, open habitats, and maquis.
[1][2] G. impressus grows up to 40 millimeters, has between 43–63 leg pairs, and is yellowish-orange in color, with lappets on the first maxillae, stout tubercle with 1–2 apical tips on the pretarsus of the second maxillae, distinct carpophagus fossae on the anterior sternites, and a distinctive arrangement of the coxal pores of the last leg pair.
[3][4] G. impressus was found to be a senior synonym of both G. insculptus (Attems, 1895) and G. alpinus (Meinert, 1870).
[5] The latter is the more commonly used name, however the International Commission on Zoological Nomenclature prioritizes the use of G. impressus over any of its synonyms.