Round Pigtoe
Pleurobema sintoxia
DIAGNOSTICS 5
SHELL
- size: mid-sized: maximum 130 mm, most under 70 mm
- thickness: thick
- shape: triangular to oval; rounded ventral edge, more rarely straight or slightly concave
- width: moderately compressed to inflated
- surface: smooth
- color/markings: pale to dark brown
- beaks: elevated, close to anterior; sculptures: few, faint ridges
- sexual dimorphism: none
- pseudocardinal teeth: large, heavy
- lateral teeth: strong
- nacre: white, occasionally pink
Soft parts: white
Similar species/lookalikes: Most similar with Fusconaia flava, with which it is most often confused. In F. flava the beaks are situated closer to mid-shell, and the posterior ventral edge is usually concave in mature specimens, more rarely straight. Nacre in F. flava is usually white, more rarely with a salmon tinge, and periostracum is paler brown.
DISTRIBUTION/WATERSHEDS 6
ONTARIO
Lake Huron-St-Clair dr.:
- Ausable R.
- Sydenham R.
Thames R.
Lake Erie dr.:- Grand R.
Sources and Credits
- (c) Philippe Blais, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais
- (c) Matthew Ireland, all rights reserved, uploaded by Matthew Ireland
- (c) Jesse Weinzinger, some rights reserved (CC BY-NC), uploaded by Jesse Weinzinger
- (c) dbarclay, some rights reserved (CC BY-NC), uploaded by dbarclay
- Adapted by Philippe Blais from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Pleurobema_sintoxia
- (c) Philippe Blais, some rights reserved (CC BY-SA)
