Creeper
Strophitus undulatus
Mussel Description 3
Elliptical shape. Medium sized, moderately inflated, thin shells. Brown to blackish shells. A "dip" in the shell exists on the anterior end of the umbo. Several rough, thick, U- shaped, raised, concentric lines radiating from beak. (Source: A Field Guide to the Freshwater Mussels of the Chicago Wilderness).
Visually Similar Species in the Milwaukee River Basin 4
Giant Floater and Cylindrical Papershell
The cylindrical papershell is more elongated and more inflated than the creeper. The giant floater has a more inflated shell and a straight hinge line compared to the creeper**
(Source: A Field Guide to the Freshwater Mussels of the Chicago Wilderness).
Status in the Milwaukee River Basin 4
Both valves and live creepers were found somewhat abundantly in the Milwaukee River Basin. They were seen most commonly on the main branch of Cedar Creek.
Sources and Credits
- (c) Matthew Ireland, all rights reserved, uploaded by Matthew Ireland
- (c) Zac Driscoll, all rights reserved, uploaded by Zac Driscoll
- Adapted by Zac Driscoll from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Strophitus_undulatus
- (c) Zac Driscoll, some rights reserved (CC BY-SA)
