Bronze shoulderband

Helminthoglypta arrosa

Description 6

A relatively large shoulderband snail that is widely distributed in central California. It often co-occurs with H. nickliniana, but they can be distinguished by the fact that H. arrosa usually has an open umbilicus and H. nickliana has a covered umbilicus. H. nickliniana also has a unique pattern of regular, oblique bumps on its shell, visible with a close macro photo or a hand lens, while the sculpture of H. arrosa tends to be more "malleate," looking like metal beaten with a hammer.

Sources and Credits

  1. (c) Ken-ichi Ueda, some rights reserved (CC BY), http://www.inaturalist.org/photos/1421207
  2. (c) Ken-ichi Ueda, some rights reserved (CC BY), http://www.inaturalist.org/photos/1421206
  3. (c) Ken-ichi Ueda, some rights reserved (CC BY), http://www.inaturalist.org/photos/1421222
  4. (c) Ken-ichi Ueda, some rights reserved (CC BY), http://www.inaturalist.org/photos/1421223
  5. (c) Neil Fahy, some rights reserved (CC BY), uploaded by Ken-ichi Ueda, http://www.inaturalist.org/photos/1778421
  6. (c) Ken-ichi Ueda, some rights reserved (CC BY-SA)

More Info

iNat Map

Establishment native
Slug or snail snail