1. Potamopyrgus antipodarum. Female. Extensive white pigment marks on sides of foot and posterior of head, with a few white marks extending to the eye, and patch of white in front of eye on tentacle. Sept. 2012. Llanfihangel, Wales.
2. Potamopyrgus antipodarum. Female. Extensive white pigment marks on sides of foot and posterior of head, with a few white marks extending to the eye, and patch of white in front of eye on tentacle. Sept. 2012. Llanfihangel, Wales.

Potamopyrgus antipodarum. Female. Extensive white pigment marks on sides of foot and posterior of head, with a few white marks extending to the eye, and patch of white in front of eye on tentacle. Sept. 2012. Llanfihangel, Wales.