Brachionus falcatus is not highly variable except for slight growth in the anterior and posterior spines. Occipital margin with six spines; intermediates much longer and curved ventrally; medians and laterals shorter and of almost equal length. Posterior spines long, incurved and with widely separated bases. The anterior and posterior spines vary considerably. A form with very spines was found in large numbers from a river. This form with shorter spines may be a modification for running water existence since longer spines tend to entangle easily. Lorica composed of a dorsal and ventral plate and compressed dorso-ventrally. Anterior dorsal margin with six spines. The intermediates are much longer than the laterals and curved laterally outwards. Median spines equal to the lateral spines.
No one has provided updates yet.