daddy long-legs spider vs insect

daddy long-legs spider

noun
  • Any of the true spiders of the family Pholcidae: small spiders with long legs. 

insect

noun
  • Any small arthropod similar to an insect, including spiders, centipedes, millipedes, etc. 

  • An arthropod (in the Insecta class) characterized by six legs, up to four wings, and a chitinous exoskeleton. 

  • A contemptible or powerless person. 

How often have the words daddy long-legs spider and insect occurred in a corpus of books? (source: Google Ngram Viewer )