Catamblyrhynchus Diadema

Some articles on catamblyrhynchus diadema, diadema:

Plushcap - Taxonomy
... There are three subspecies Catamblyrhynchus diadema citrinifrons, Catamblyrhynchus diadema diadema, and Catamblyrhynchus diadema federalis ... a paler cap while the federalis is in coastal Venezuela and is brighter than diadema ...