Figs 17–26 in Review of the Dichotrachelus alpestris STIERLIN, 1878 species group with evidence for a species complex of D. augusti F. SOLARI, 1946, and D. sondereggeri sp. nov. from Switzerland (Coleoptera, Curculionidae)

Figs 17–26: Male and female genitalia. 17–20: Tip of aedeagus: 17) Dichotrachelus sondereggeri sp. nov. from Corn dal Solcun; 18, 19) forms II (Val Ferret), and III (Col de Balme) of D. augusti species complex; 20) D. alpestris from Anzeindaz. 21–23: Spiculum ventrale: 21) D. sondereggeri sp. nov. from Corn dal Solcun; 22) D. augusti form II from Val Ferret; 23) D. alpestris from Anzeindaz. 24–26: Spermatheca: 24) D. sondereggeri sp. nov. from Corn dal Solcun; 25) D. augusti form II from Val Ferret; 26) D. alpestris from Anzeindaz.