Acorna's World / Anne McCaffrey, Elizabeth A. Scarborough

Acorna, the "unicorn girl" has made peace with her Linyaari past, and aboard the interplanetary salvage vessel Condor she is finally free. But dread overtakes her when a distress signal summons Acorna and her companions to a nearby planet. For among the myraid wonders of this world of sentient plants and intoxicating perfumes are unmistakable signs that everythng Acorna holds dear is in peril. A promise of world-shattering devastation is in the celestial winds-and impending catastrophe at the claws of the cold-blooded insectile race that seeks to eradicate all Linyaari and human life from the galaxy...the Khleevi!