Summary
In this paper the author describer two new species acarofilous in the Styracaceae from Amazon Region — Styrax cinerea and S. squamulosa. Among other characteristic feature, these species differ mainly from the other Amazonian species, in the membranaceous papillae on the dorsal surface of the leaves, which are found at the junction of the secondary nerves with the midrid outher lower 2/3 of the leaves.