Gustavo Leonardi was an Italian

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

entomologist.

Leonardi was an entomology assistant in the universities of Padua and Portici before becoming a plant disease inspector at Vintimille. He wrote 45 publications on pest insect

Insect

Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s, such as Monografia delle Cocciniglie italiane (1920). With Agostino Lunardoni (1857–1933), he wrote a four volume treatise on pest insects in Italy (1889–1901).