hoffmannorum, Derhamia Géry [J.] & Zarske [A.] 2002:39, Figs. 1-6, 8, 11 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 52; ref. 26555] Sand bank at the confluence of the Kamarang River and the Mazaruni River, north of the Roraima, northwestern part of Guyana. Holotype: MTD F 26491. Paratypes: MTD F 26492-93 (2), 26494 (1), 26495-97 (3, 1 c&s), MHNG 2630.86 (5), Géry Priv. Coll. 1055.1.2002 (1), 1055.2-3.2002 (2). Type catalog: Zarske 2003:19 [ref. 27474]. •Valid as Derhamia hoffmannorum Géry & Zarske 2002 -- (Weitzman & Weitzman in Reis et al. 2003:242 [ref. 27061], Taphorn et al. 2022:26 [ref. 41297], Marinho 2024:380 [ref. 40817]). Current status: Valid as Derhamia hoffmannorum Géry & Zarske 2002. Lebiasinidae: Lebiasininae. Distribution: South America: Mazaruni River drainage (Guyana) endemic. Habitat: freshwater.