It was formerly treated as a subspecies of the violaceous trogon. Little is known in any detail about the violaceous jay's life history. They are also more or less overlaid with violaceous clouds. Caterpillar has dull violaceous dorsum and greenish ventrum. "Psilocybe caerulescens" spores are dark violaceous brown. The ground color of the shell is pink or violaceous white, occasionally reddish. The base and the interior are violaceous. Upperside&colon; violaceous blue, with brilliant iridescent tints in certain lights. The interior of the aperture is violaceous. Violaceous trogons will consume wasps and wasp larvae encountered while digging nests. The outer bulb scales (cataphyll) are papyraceous, colourless or violaceous ("Zoellnerallium"). The violaceous euphonia's song is a varied mix of musical notes, squeaks, chattering and imitation. In the adult, the head, thorax and forewings are pale violaceous grey. The violaceous jay is omnivorous, mainly consuming fruits, insects, and bird and reptile eggs. The violaceous euphonia ("Euphonia violacea") is a small passerine bird in the true finch family.