Genus Sphaerella T. A. Conrad, 1838 [not Sommerfelt, 1824]

(3-4-4-0-20-7-0-33-0-0-0-0-0)
Ref. Vokes, 1980 p 108
[=Timothynus A. W. Harris & K. v. W. Palmer, 1946]
Ref. Vaught, 1989 p 125

tumida ex T. A. Conrad, ms, P. P. Carpenter, 1864
(3-4-4-0-20-7-0-33-0-1-0-0-0)
[=Diplodonta (Diplodonta) orbella (A. A. Gould, 1851)]
Ref. Bernard, 1983 p 30