Primera cita del enemigo natural Acalanthis quadrisignata (Coleoptera: Trogossitidae) asociado con cámaras pupales de Pissodes castaneus (Coleoptera: Curculionidae), en la provincia de Chubut, Patagonia, Argentina.

Acalanthis quadrisignata Erichson (Coleoptera: Trogossitidae) is an endemic beetle predator of southern Chile and Argentina, inhabiting native forest environments. By conducting a study on the life cycle of the small banded pine weevil, Pissodes castaneus De Geer, using trap logs and sampling forest debries, in a Pinus radiata (D. Don) afforestation in Trevelin (Chubut, Argentina), between September 2014 and September 2015, adults of A. quadrisignata were found inside the pupal chambers of the weevil. This is the first record of a natural enemy of P. castaneus in Patagonia, Argentina. This contribution adds a new habitat record where A. quadrisignata can develop and a new record to its geographical distribution in Argentina. [ABSTRACT FROM AUTHOR]