lethophaga, Lampetra (Entosphenus) Hubbs [C. L.] 1971:126, Figs. 1, 2a-b, 6 [Transactions of the San Diego Society of Natural History v. 16 (no. 6); ref. 7683] Headwaters of Fall River, tributary to Pit River, Shasta County, California, U.S.A. Holotype: UMMZ 130648. Paratypes: UMMZ 130649 (1). Additional material: CAS 25987 (1); CUMV; OS 2856-K0010 (1); SIO 65-144 (1); CAS-SU 28783 (1), 35555 (1); UMMZ 55316 (2), 130573 (2), 130576 (1), 130606 (34), 130648 (1), 136678 (2), 136683 (2); USNM. •Valid as Lampetra lethophaga Hubbs 1971 -- (Lee et al. 1980:28 [ref. 22416], Page & Burr 1991:21 [ref. 18983], Lorion et al. 2000:1019 [ref. 25020], Moyle 2002:99 [ref. 26449], Nelson et al. 2004:48 [ref. 27807], Scharpf 2005:5 [ref. 28940]). •Valid as Entosphenus lethophagus (Hubbs 1971) -- (Yamazaki & Goto 2000:8 [ref. 24514], Lang et al. 2009:48 [ref. 31599], Page & Burr 2011:128 [ref. 31215], Renaud 2011:30 [ref. 31770], Page et al. 2013:48 [ref. 32708], Page et al. 2023:35 [ref. 40505]). Current status: Valid as Entosphenus lethophagus (Hubbs 1971). Petromyzontidae. Distribution: North America: Oregon and California (U.S.A.). Habitat: freshwater.