Heylaerts (1831–1916) was a Dutch entomologist who specialised in Lepidoptera (most notably Psychidae world species) and Coleoptera.
By profession he was a physician.
His collection of Psychidae is held by Rijksmuseum Natural History, Leiden.
This article about an entomologist is a stub.
You can help Wikipedia by expanding it.This article about a Dutch scientist is a stub.