Abstract: For screening attractant semiochemicals of the Armand pine bark weevil, Pissodes punctatus Langor et Zhang, volatiles of adult frass and male hindguts were analysed and tested both in laboratory and in the field. GC-MS analysis confirmed that besides familiar monoterpenes such as α-pinene, β-pinene and 3-carene, cis-2-isopropenyl-1-methylcyclobutannethanol （grandisol） also exists in adult frass and male hindguts of P. punctatus. P. punctatus weevils displayed anemotaxis towards low dosage of 3-（+）-carene, grandisol and its corresponding aldehyde, grandisal, in a Y-tube olfactometer. In field tests, both grandisol and grandisal exhibited attraction activity to the bark weevils. These results suggest that grandisol is a component of aggregation pheromone of P. punctatus.

Key words: Pissodes punctatus, aggregation pheromone, grandisol, taxis responses, attraction test