aphanothece aphanothece aphanothece is a genus of cyanobacteria belonging to the family aphanothecaceae. aphanothece aphanothece castagnei rbh. scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: chroococcales family: aphanothecaceae genus: aphanothecec.nägeli, 1849 the genus has cosmopolitan distribution. species: aphanothece atro-crustacea skuja aphanothece bullosa (menegh.) rabenh., 1865 aphanothece castagnei (bréb.) rabenh.