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3 families • 11 genera/subgenera • 46 species

Family PETROMYZONTIDAE Northern Lampreys
9 genera/subgenera • 42 species

Ichthyomyzon Girard 1858   ichthyo, fish; myzon, to suck, a standard suffix for generic lamprey names, referring to their suctorial behavior

Ichthyomyzon bdellium (Jordan 1885)   bdella, leech or sucker, referring to their parasitic behavior

Ichthyomyzon castaneus Girard 1858   chestnut, referring to adult coloration

Ichthyomyzon fossor Reighard & Cummins 1916   digger, referring to ammocoetes, which dig themselves into the substrate

Ichthyomyzon gagei Hubbs & Trautman 1937   in honor of histologist and embryologist Simon Henry Gage (1851-1944), Cornell University, “one of the foremost students of the lampreys,” who brought this “interesting and distinct species” to the authors’ attention

Ichthyomyzon greeleyi Hubbs & Trautman 1937   in honor of John R. Greeley, the authors’ erstwhile colleague at the University of Michigan, who collected type

Ichthyomyzon unicuspis Hubbs & Trautman 1937   unicuspid, referring to single cusps of circumoral teeth

Petromyzon Linnaeus 1758   petro, stone; myzon, to suck, probably referring to the attachment of adults to rocks during nest building and mating

Petromyzon marinus Linnaeus 1758   of the sea, referring to marine habitat (as a non-breeding adult)


Caspiomyzon Berg 1906   Caspio, from Caspian Sea drainage; myzon, to suck, standard suffix for generic lamprey names, referring to their suctorial behavior

Caspiomyzon wagneri (Kessler 1870)    in honor of Nicolai Petrivitsch Wagner (1829-1907), Kessler’s colleague at the Zoological Institution in St. Petersburg (Kessler described this lamprey from a specimen in Wagner’s collection)

Entosphenus Gill 1862    entos, within; phenus, wedge, referring to wedge-shaped tooth within mouth on tongue

Entosphenus folletti Vladykov & Kott 1976    in honor of William I. Follett, California Academy of Sciences, “friend, a collaborator in the studies of holarctic lampreys, and a distinguished scholar of the fishes of California”    

Entosphenus lethophagus (Hubbs 1971)    letho, forget; phaga, to eat, referring to adults, which do not eat before they spawn and die

Entosphenus macrostomus (Beamish 1982)    macro-, large; stoma, opening, referring to large mouth or disc compared to E. tridentatus

Entosphenus minimus (Bond & Kan 1973)    least, referring to small size, at 12.9 cm, the smallest known parasitic lamprey

Entosphenus similis Vladykov & Kott 1979    like or resembling, referring to similarity to E. tridentatus

Entosphenus tridentatus (Gairdner 1836)    tri-, three; dentatus, toothed, referring to tricuspid teeth

Eudontomyzon Regan 1911
eu-, well or very; odonto, teeth, referring to numerous radially arranged teeth; myzon, to suck, standard suffix for generic lamprey names

Eudontomyzon danfordi Regan 1911    in honor of Charles George Danford (1843-1928), Scottish artist, sportsman and ornithologist, who collected type

Eudontomyzon graecus Renaud & Economidis 2010    Greek, derived from Graeci, a tribe of Hellenes living since Prehistoric times in area where lamprey occurs    

Eudontomyzon hellenicus Vladykov, Renaud, Kott & Economidis 1982    Greek, referring to only country where it occurs

Eudontomyzion mariae (Berg 1931)    in honor of Berg’s wife Maria, “who examined many thousands of river lampreys from the mouth of the Neva and other streams, falling into the Finnish Gulf”

Eudontomyzon morii (Berg 1931)    in honor of biologist Tamezo Mori (1884-1962), who provided type

Eudontomyzon stankokaramani Karaman 1974    in honor of Karaman’s father, Stanko L. Karaman (1889-1959), “the greatest explorer of freshwater fish fauna in Yugoslavia”

Eudontomyzon vladykovi Oliva & Zanandrea 1959    patronym not identified but clearly in honor of lamprey biologist Vadim D. Vladykov (1898-1986)   

Lampetra Bonaterre 1878    lambere, to lick; petra, rock, referring to their suctorial behavior

Subgenus Lampetra

Lampetra alavariensis Mateus, Alves, Quintella & Almeida 2013    ensis, suffix denoting place: Aveiro (latinized as Alvarium), Portuguese district where it occurs     

Lampetra auremensis Mateus, Alves, Quintella & Almeida 2013    –ensis, suffix denoting place: Aurem, 12th-century name for what is now Ourém, Portuguese region where it occurs

Lampetra ayresii (Günther 1870)    in honor of physician and ichthyologist William O. Ayres (1817-1887), California Academy of Sciences, who described species in 1855 but used a preoccupied name (Petromyzon plumbeus)

Lampetra fluviatilis (Linnaeus 1758)    of a river, referring to upstream river spawning migration

Lampetra hubbsi (Vladykov & Kott 1976)    in honor of ichthyologist Carl L. Hubbs (1894-1979), “distinguished friend and a keen student of lamprey taxonomy” [placed in Entosphenus by many workers]

Lampetra lanceolata Kux & Steiner 1972    lance-like, probably referring to how the end of  body tapers to a lance- or lancet-like point  

Lampetra lusitanica Mateus, Alves, Quintella & Almeida 2013    –ica, belonging to: Lusitania, ancient name of Portugal, where it is endemic  

Lampetra ninae (Naseka, Tuniyev & Renaud 2009)    in honor of Nina Bogutskaya, Russian Academy of Sciences, for her contribution to the knowledge of Eurasian freshwater fishes

Lampetra pacifica Vladykov 1973    ica, belonging to: Pacific Coast streams of California and Oregon, USA, where it occurs

Lampetra planeri (Bloch 1784)    in honor of Johann Jacob Planer (1743-1789), physician and professor, who supplied type

Lampetra richardsoni Vladykov & Follett 1965    in honor of surgeon-naturalist John Richardson (1787-1865), “author of several important works on fishes from North America”

Lampetra soljani Tutman, Freyhof, Dulčić, Glamuzina & Geiger 2017    in honor of Tonko Šoljan (1907-1980), for his contribution to the knowledge and development of ichthyology in Croatia and Bosnia and Herzegovina

Lampetra zanandreai Vladykov 1955    in honor of Giuseppe Zanandrea, Istituto di Anatomia Comparata della Università di Bologna, “who made several interesting biometrical and biological studies of lampreys from northern Italy”  

Subgenus Okkelbergia Creaser & Hubbs 1922    –ia, belonging to: Peter Okkelberg, University of Michigan, for his “careful studies on the history of the germ cells in lampreys”

Lampetra aepyptera (Abbott 1860)    aepy, high; pteron, fin, referring to enlarged dorsal fins of nuptial males

Lethenteron Creaser & Hubbs 1922    lethalis, deadly; enteron, alimentary canal, referring to fatal degeneration of intestine in L. appendix

Lethenteron alaskense Vladykov & Kott 1978    ensis, suffix denoting place: Alaska, referring to West Creek, a tributary of Brooks Lake, Alaska, type locality (also occurs in Northwest Territories)    

Lethenteron appendix (DeKay 1842)    appendage, referring to genital papillae of nuptial males

Lethenteron camtschaticum (Tilesius 1811)    icum, belonging to: the Kamchatka, Russia, type locality

Lethenteron kessleri (Anikin 1905)    patronym not identified but probably in honor of German-Russian zoologist Karl Fedorovich Kessler (1815-1881), who described a lamprey (Caspiomyzon wagneri) in 1870

Lethenteron reissneri (Dybowski 1869)    patronym not identified, possibly in honor of Baltic German anatomist Ernst Reissner (1824-1878)

Tetrapleurodon Creaser & Hubbs 1922    tetra, four; pleurodon, lateral teeth, referring to four enlarged teeth on each side of mouth

Tetrapleurodon geminis Álvarez 1964    twin, i.e., nearly identical to T. spadiceus

Tetrapleurodon spadiceus (Bean 1887)    nut-brown, referring to its color

Family GEOTRIIDAE Southern Lamprey

Geotria Gray 1851    etymology not explained, perhaps from the Greek geotragia, “eating of earth-like substances,” referring to how this lamprey, like other lampreys, uses its suctorial mouth to attach itself to submerged rocks and stones, thus creating the impression that it is feeding on the earth

Geotria australis Gray 1851    southern, referring to South Australia, type locality

Family MORDACIIDAE Southern Topeyed Lampreys

Mordacia Gray 1851    etymology not explained; likely derived from mordax, biting, referring to specific name of M. mordax

Mordacia lapicida (Gray 1851)    lapis, stone; –cida, cut or kill, i.e., stonecutter, allusion not evident but possibly referring to parasitic behavior

Mordacia mordax (Richardson 1846)    biting, perhaps referring to its parasitic behavior and/or serrated, cutting teeth    

Mordacia praecox Potter 1968    premature, referring to their “precocious nature of sexual development,” wherein newly metamorphosed ammocoetes become sexually mature without first reaching their adult parasitic phase