I read a sci-fi book a long time ago and really enjoyed it, but for for the life of me, I can't remember its title or author and only remember a few details (really few).
I'm almost certain it was from the golden age or shortly after, maybe from the '50s or '60s.
Its narrative takes place on a planet not completely inhabited I think, where the protagonist finds out about a species of parasites (insect-like, I think, with a larval stage) that evolved to completely replicate the external appearance of a human being after said larval stage in order to live among them and if I remember correctly they are also able to reproduce with a human being. Before finding this out, the protagonist actually falls in love with one of them.
Can't really remember anything else or find any other information online (and I've tried everywhere with lots of different combinations of relevant keywords).
Oh and maybe it was a short story and I'm confusing things.
Really appreciate if someone could shed some light over this.