Cosmarium quadratum fo.
Compare with: Cosmarium quadratum; Cosmarium cucumis var. magnum
Remarks: The specimen depicted below from Switzerland and the United States (WA) have sizes that lies between that of Cosmarium quadratum and the similar shaped Cosmarium cucumis var. magnum .

North America


C0500
2016044010
C0500
2016045016
2016044-010
Front view
USA (WA)
2016045-016
Front view
USA (WA)

Europe


C0500
2016028002
2016028-002
Front view
Switzerland
All photos copyright: © 2009-2020 Alfred van Geest - Send comments to asvg@xs4all.nl