species Theliderma sparsa (Lea, 1841): synonymy

Unio sparsus Lea, 1841

Lea, 1841. Proc. Amer. Phil. Soc. 2: 82.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 242 [80], pl. 25, fig. 58.
HOLOTYPE USNM_84222, Holston R., Tenn.

Quadrula (s.s.) sparsa — Simpson (1900)
Quadrula sparsa — Ortmann (1912), Stansbery (1970), Turgeon et al. (1988), Williams et al. (1993), Parmalee & Bogan (1998), ... ITIS (2012), Szumowski et al. (2012), Haag (2012), Jones (2015), Klymus et al. (2020)
Quadrula (s.s.) (Group of Q. metanevra) tuberosa var. sparsa — Simpson (1914)
Quadrula intermedia — Ortmann (1918)
Quadrula (Orthonymus) metanevra-tuberosa — Frierson (1927)
Orthonymus metanevrus tuberosus — Haas (1969)
Quadrula tuberosa — R.I. Johnson (1980)
Theliderma sparsa — IUCN (1996), Graf & Cummings (2007), Cummings & Graf (2010), Williams et al. (2017), Lopes-Lima et al. (2019), Graf & Cummings (2021), FMCS (2021), Neemuchwala et al. (2023), Hopper et al. (2023), FMCS (2025)