An amateur collector and breeder of insects, esp. of butterflies and moths; a lepidopterist.

Aurelian is an archaic term used for lepidopterists, those interested in butterflies. The Society of Aurelians was one of the oldest organized bodies of specialists in any branch of zoology and was probably founded by Joseph Dandridge and a few others. They collected and documented insects from the 1690s and these collections were made available to John Ray.

Of or pertaining to the aurelia.