Titanolebias calvinoi, new species
LSID urn:lsid:zoobank.org:act:CA042C50-22D2-4CE1-83AA-E199AB02217C.
Holotype. IBIGEO-I 496, male, 96.8 mm SL, Argentina, Chaco province, Parque Nacional Chaco, seasonal ponds, Rio Negro Basin (aprox. −26.82, −59.62, 80m absl); Coll.: Alonso F, Terán GE, Waldbillig M, Serra Alanís WS, González Taboas F, Bugeau B, Calviño P. June 2023 (Fig. 1).
Paratypes. IBIGEO-I 497, 7 males, 44.3–81.9 mm SL, 8 females 35.7–50.2 mm SL; CI-FML 8107, 7 males 31.9–61.4 mm SL (2 c&s), 7 females 32.8–58.6 mm SL