Abbreviations

Type material (Fig. )

Non-type material (Fig. )

Original description of Petromyzon marinus camtschaticus Tilesius, 1811: 240–247, pl. IX, figs I, II

Original description of Petromyzon japonicus von Martens, 1868: 3–5, pl. I, fig. 2

Original description of Petromyzon kessleri Anikin, 1905: 10–15

Original description of Lampetra japonica septentrionalis Berg, 1931: 93, 100–102, pl. V, fig. 4

Original description of Petromyzon ernstii Dybowski, 1872: 220

Original description of Petromyzon dentex Anikin, 1905: 15–17

Original description of Ammocoetes aureus Bean, 1881: 159

Original description of Lampetra mitsukurii Hatta, 1901: 22–24

Original descriptions of Lampetra mitsukurii minor Hatta, 1911: 263–266, 268, pl. IX, figs 3, 4, 7, 8 and La. m. major Hatta, 1911: 266–268, pl. IX, figs 1, 2, 5, 6

Original description of Lethenteron matsubarai Vladykov & Kott, 1978: 1792–1800

One or multiple species

Lethenteron species with exolaterals

Petromyzon japonicus, a synonym of P. marinus camtschaticus

Identity of the lamprey in Steller’s unpublished manuscript

Lampetra japonica septentrionalis not derived from La. fluviatilis

Lampetra japonica septentrionalis, a synonym of Petromyzon japonicus

Petromyzon ernstii, a synonym of Lethenteron camtschaticum

Variability in the infraoral lamina dentition of Le. camtschaticum

Real or perceived distributional discontinuity between the populations of parasitic Le. camtschaticum in Russia

Adult total length attained by Le. kessleri

Variability in the dentition of Le. kessleri

Lethenteron kessleri without posterials

Identity of lampreys in the Utkholok River drainage, Kamchatka

Identity of lampreys in the Kol’ River drainage, Kamchatka

Identity of lampreys in the Lake Azabach’e basin, Kamchatka

Ammocoetes aureus, a synonym of Le. camtschaticum

Lethenteron alaskense, a synonym of Le. kessleri

Lethenteron kessleri distinct from Le. reissneri

Lethenteron reissneri present in the Angara River drainage, Russia

Lethenteron mitsukurii distinct from Le. kessleri and Le. reissneri

Identity of the lamprey from Siberia described in

Lethenteron matsubarai, a synonym of Le. mitsukurii

Taxonomic identity of Lampetra mitsukurii minor and La. m. major

Lethenteron mitsukurii not the spawning phase of Le. camtschaticum

Sympatric parasitic and nonparasitic taxa

Taxonomic identity of nonparasitic lampreys in Japan and Sakhalin Island, Russia with low trunk myomere counts

Synonymy of Lethenteron camtschaticum (Tilesius, 1811), the Arctic lamprey

Synonymy of Lethenteron mitsukurii (Hatta, 1901), the Japanese brook lamprey

Synonymy of Lethenteron kessleri (Anikin, 1905), the Siberian brook lamprey

Partial synonymy of Lethenteron reissneri (Dybowski, 1869), the Far Eastern brook lamprey based on this study

Generic assignment of Lampetra (Eudontomyzon) morii

Taxonomic key to adults of Lethenteron

Phylogenetic considerations