. "The chemical reactions and pathways resulting in the breakdown of ommochromes, any of a large group of natural polycyclic pigments commonly found in the Arthropoda, particularly in the ommatidia of the compound eye." . . . . . . . "ommochrome catabolic process" . "ommochrome breakdown" . "ommochrome catabolism" . "ommochrome degradation" . .