20 Ancula gibbosa form C

20 Ancula gibbosa form C

Unlined and unspotted form C of Ancula gibbosa sensu lato from Pacific Ocean at Vashon Island, Washington, May 2021. Similar appearance to Atlantic forms A and B of A. gibbosa, but there are no publicly available molecular sequences of unlined A. gibbosa from the eastern or western Pacific. © S. Thiebaud.