flyblow vs pupa

flyblow

noun
  • The larva of the blowfly, especially when found on rotten meat. 

verb
  • To deposit eggs upon, as a blowfly does on meat; to cause to be maggoty. 

  • To taint or contaminate. 

pupa

noun
  • An insect in the development stage between larva and adult. 

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