deer ked vs tabanid

deer ked

noun
  • A Eurasian species of louse fly in the family Hippoboscidae, Lipoptena cervi, that are parasites of elk, deer and other bovine animals, sucking blood and laying eggs in the fur of the host animals. 

tabanid

noun
  • A horsefly. 

adj
  • Of or pertaining to species of the horsefly family, Tabanidae. 

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