These beautiful micrographs of Lacogromia cassipara have been made by Steffen Clauss, Germany.

Lacogromia cassipara - Steffen Clauss
Lacogromia cassipara - Steffen Clauss
Typical shape, with one side slightly depressed.
Lacogromia cassipara - Steffen Clauss
Lacogromia cassipara - Steffen Clauss
Lacrogromia cassipara, detail of the test.