> Client is looking for a book with these details:
>
> Humans are out in the universe.
> They have met a race of intelligent caterpillar type aliens (friendly).
> They (humans) also have a servant class that are clones who only live 40 years.
> There might have been more than one book.
> Somewhere around the 80s?
>
> Any clues?

Don't know about the caterpillars, but the humans sound like C. J.
Cherryh's azi.  Perhaps Serpent's Reach?

<http://en.wikipedia.org/wiki/Serpent's_Reach>


Bob Sullivan
Schenectady County (NY) Public Library