23 Callochiton septemvalvis COMPARE  Callochiton doriae

23 Callochiton septemvalvis COMPARE  Callochiton doriae

Callochiton doriae Grooves faintly discernible on pleural areas of intermediate valves. Differentiation with photographs from C. septemvalvis is difficult as the grooves are usually difficult to discern. Menorca, Spain, July 2021. © Frédéric Andre.