New species of Acanthocinini Blanchard, 1845 (Coleoptera, Cerambycidae) from Rondônia state, Brazil and notes on some genera.

Three new species of Acanthocinini (Coleoptera, Cerambycidae) from Rondônia State, Brazil, are described and illustrated: Leptostylus obrienorum, Nyssodrysina maculosa and Urgleptes curvatum. We also present a brief generic discussion about these genera.