Alexandre CONSTANT

Alexandre Constant also known as Alfred Constant (14 September 1829, Autun – 13 May 1901, Golfe-Juan) was a French entomologist who specialised in Lepidoptera.

Constant was a banker. He became a Member of the Société entomologique de France in 1854. He was principally interested in Microlepidoptera.

source https://en.wikipedia.org/wiki/Alexandre_Constant