Tagelus subteres, common name lesser tagelus, is a species of saltwater clam, a marine bivalve mollusc belonging to the family Solecurtidae.

[1] Shells of Tagelus subteres can reach a length of 43 millimetres (1.7 in).

[2][3] These small and compact shells show violet rays and a glossy periostracum.

[4] This species can be found in the East Pacific.

[5] This bivalve-related article is a stub.