Figure 35 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416

Figure 35 - Cratacanthus dubius (Palisot de Beauvois). This widely distributed and morphologically variable species was described by the French naturalist traveler Ambroise Marie Joseph Palisot, Baron de Beauvois, one of the first entomologists to collect and describe American insects. On North American soil, Palisot de Beauvois collected from the Ohio River in the west to Savannah in Georgia. Unfortunately most of his collection was lost in a shipwreck off Nova Scotia in 1798 and his subsequent published descriptions were based on his notes and drawings.