hawkmoth vs sphingid

hawkmoth

noun
  • Any of several moths, of the family Sphingidae, that hover over flowers when sucking nectar through a long proboscis. 

sphingid

noun
  • Any of many hawk moths of the family Sphingidae 

adj
  • Of or pertaining to these moths. 

How often have the words hawkmoth and sphingid occurred in a corpus of books? (source: Google Ngram Viewer )