Square-backed Marsh Crab in Anne Arundel Co., Maryland (8/25/2019). (c) Sean Sipple, all rights reserved. Photo by Sean Sipple via iNaturalist. (MBP list)
Square-backed Marsh Crab in Calvert Co., Maryland (3/14/2021). (c) Sean Sipple, all rights reserved. Photo by Sean Sipple via iNaturalist. (MBP list)
Square-backed Marsh Crab in Anne Arundel Co., Maryland (8/25/2019). (c) Sean Sipple, all rights reserved. Photo by Sean Sipple via iNaturalist. (MBP list)
A Square-backed Marsh Crab in Anne Arundel Co., Maryland (6/27/2013). Measured 20 mm. Photo by Robert Aguilar, SERC. (MBP list)