cellar spider vs cranefly

cellar spider

noun
  • Pholcus phalangioides, a spider of the family Pholcidae. 

cranefly

noun
  • Any of various large flies of the suborder Tipulomorpha that have slender bodies and very long legs and that resemble giant mosquitoes. 

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