Inquiline:
Animals that live in the dwellings of another species without affecting them are known as inquilines. Inquiline termites (Inquilinitermes microcerus) are unique among termites in being unable to make their own nests. Instead, they inhabit the labyrinthine hallways built by another termite, Constrictotermes cyphergaster. Until now, it has been unclear how the two parties kept peaceful in such tight quarters, because termites are typically very aggressive towards outsiders.
From “Termite intruders evolved cowardice to squat in another species’ nest,” Jake Buehler, NewScientist (8 August 2020).
