Stimpson, 1858
G1 narrow, sword-like, outward directed, and distally blunt; distal and subdistal segments covered by membrane. Longitudinal ditch on inner margin of stem narrow, genital opening funnel-formed. (Bott, 1967: 211).
Type species: Geothelphusa obtusipes Stimpson, 1858.
Species treated:
Geothelphusa aramotoi Minei, 1973
Geothelphusa candidiensis Bott, 1967
Geothelphusa dehaani (White, 1847)
Geothelphusa exigua Suzuki & Tsuda, 1994
Geothelphusa levicervix (Rathbun, 1898)
Geothelphusa marmorata Suzuki & Okano, 2000
Geothelphusa minei Shy & Ng, 1998
Geothelphusa miyazakii (Miyake & Chiu, 1965)
Geothelphusa obtusipes Stimpson, 1858
Geothelphusa sakamotoana (Rathbun, 1905)
Geothelphusa shokitai Shy & Ng, 1998
Geothelphusa tenuimana (Miyake & Minei, 1965)