geometrid vs measuring worm

geometrid

noun

  • Any of the family Geometridae of moths 

  • A larva of such moth, which when walking alternate legs and prolegs, giving the appearance of measuring 

adj

  • Relating to such moths 

measuring worm

noun

  • The larva of a moth of the family Geometridae. 

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