aphanocapsa aphanocapsa aphanocapsa is a genus of cyanobacteria belonging to the family merismopediaceae. aphanocapsa scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: synechococcales family: merismopediaceae genus: aphanocapsanägeli the species of this genus are found in europe, asia (bangladesh) and america. species: aphanocapsa elachista west & g.s.west, 1894 aphanocapsa feldmannii frémy, 1933