Nor Crystal Tears

Nor Crystal Tears by Foster, Alan Dean. mass_market edition. ISBN: 9780345291417.

Before Man and insectlike Thranx had become allies, when the reptilian AAnn were just occasional raiders of Thranx colony worlds, one young Thranx agricultural expert lived a life of quiet desperation. A dreamer in a world of sensible, stable beings, Ryo buried himself in his work -- reclaiming marshland from a tenacious jungle -- until he came across a letter describing a relatives encounter with horrid, two-legged, soft-skinned space-going beasts . . .