See image for index to numbers.

1. Dytiscus circumcintus Ahr. = Dytiscus circumcintus Ahrens, 1811, adult female from dorsal
2. Dytiscus circumflexus F. = Dytiscus circumflexus Fabricius, 1801, adult female from dorsal
3. Dytiscus lapponicus Gyll. = Dytiscus lapponicus Gyllenhal, 1808, adult male from dorsal
4. Cybister lateralimarginalis Degeer. = Cybister lateralimarginalis (De Geer, 1774) (4^a: larva from dorsal, 4^b: adult male from dorsal, 4^c: adult female from dorsal, 4^d: labrum of adult, 4^e: mandible of adult, 4^f: maxilla of adult, 4^g: labium of adult from dorsal and ventral[verification needed])
5. Aulonogyrus striatus F. = Aulonogyrus striatus (Fabricius, 1792) (5^a: larva, dorsal view, 5^b: adult from dorsal, 5^c: elytra pattern)
6. Aulonogyrus concinnus Klug. = Aulonogyrus concinnus (Klug, 1834) (6^a: adult from dorsal, 6^b: elytra pattern)
7. Gyrinus minutus F. = Gyrinus minutus Fabricius, 1798 (7^a: adult from dorsal, 7^b: elytra pattern)
8. Gyrinus urinator Illig. = Gyrinus urinator Illiger, 1807 (8^a: adult from dorsal, 8^b: elytra pattern)
9. Gyrinus marius [sic] Gyll. = Gyrinus marinus Gyllenhal, 1808 (9^a: adult from dorsal, 9^b: elytra pattern)
10. Gyrinus matator [sic] L. = Gyrinus natator (Linnaeus, 1758) (10^a: adult from dorsal, 10^b: antenna, 10^c: labrum, 10^d: mandible, 10^e: maxilla, 10^f: labium)
11. Gyrinus bicolor Payk. = Gyrinus paykulli Ochs, 1927 (11^a: adult from dorsal, 11^b: elytra pattern)
12. Orectochilus villosus Müll. = Orectochilus villosus (O.F.Müller, 1776) (12^a: adult from dorsal, 12^b: head from ventral)
13. Rhysodes sulcatus F. = Rhysodes sulcatus (Fabricius, 1787) (13^a: adult from dorsal, 13^b: labrum, 13^c: mandible, 13^d: maxilla)