smerinthus

from The Century Dictionary.

• noun A genus of sphinx-moths, of the family Sphingidæ, having the antennæ serrate. S. ocellatus is the eyed sphinx; S. populi, the poplar-sphinx; and S. tiliæ, the lime-sphinx or hawk-moth.
• noun A moth of this genus: as, the lime-smerin-thus, whose larva feeds on the lime-tree or linden.