Guide to Amphipleura pellucida
Credit: Carrie Graeff
- Median rib narrow
- Raphe branch length nearly constant across specimens from large to small
- Transapical striae extremely fine
The median rib in A. pellucida is narrow and does not vary in width across its length. Comparing specimens from large to small in size shows that the length of the raphe branch increases only slightly with valve length. The transapical striae are extremely fine and difficult to resolve under the LM.