Graphoderus

Graphoderus is a genus of beetle in family Dytiscidae native to the Holarctic.

Extant species
The genus Graphoderus contains the following 12 species:
 * Graphoderus adamsii (Clark, 1864)
 * Graphoderus austriacus (Sturm, 1834)
 * Graphoderus bieneri Zimmermann, 1921
 * Graphoderus bilineatus (De Geer, 1774)
 * Graphoderus cinereus (Linnaeus, 1758)
 * Graphoderus elatus Sharp, 1882
 * Graphoderus fascicollis (Harris, 1828)
 * Graphoderus liberus (Say, 1825)
 * Graphoderus manitobensis Wallis, 1933
 * Graphoderus occidentalis Horn, 1883
 * Graphoderus perplexus Sharp, 1882
 * Graphoderus zonatus (Hoppe, 1795)

Extinct species
These two extinct species are known only from fossils:
 * †Graphoderus heeri Nilsson, 2001
 * †Graphoderus mirabilis Riha, 1974