Queried GO terms:

  idGO:0018995   Detailed information
  namehost
  namespacecellular_component
  def"Any organism in which another organism, especially a parasite or symbiont, spends part or all of its life cycle and from which it obtains nourishment and/or protection." [ISBN:0198506732 "Oxford Dictionary of Biochemistry and Molecular Biology"]
  subsetgosubset_prok
  synonym"host organism" EXACT []
  xrefWikipedia:Host_(biology)
  is_aGO:0044215 ! other organism

No monarch genes has this GO term.