Was the hermit hummingbird hawkmoth first described in the 18th century or the 19th century?

Macroglossum insipida, the hermit hummingbird hawkmoth, is a moth of the family Sphingidae. It was described by Arthur Gardiner Butler in 1875.

The hermit hummingbird hawkmoth was first described in 1875, which is in the 19th century.