Kairomonal attraction of the native parasitoid, Ibalia leucospoides (Hymenoptera: Ibaliidae), to Amylostereum areolatum, a mycosymbiont of Sirex noctilio

Abundance levels and percent total composition were recorded for linalool, anisaldehyde and p and m-ethylacetophenone volatiles throughout eight weeks of Amylostereum areolatum fungal growth on PDA which also confirmed the production of p/m- ethylacetophenone. Ibalia leucospoides ensiger males and females were not significantly attracted to p-ethylacetophenone, linalool, acetaldehyde or anisaldehyde in laboratory behavioral assays. Attraction of males to p-ethylacetophenone and both male and females to linalool was marginally significant. Female I. l. ensiger elicited oviposition during anisaldehyde treatment in a y-tube olfactometer. Female I. l. ensiger displayed antennal probing during linalool and p-ethylacetophenone y-tube assays along with male I. l. ensiger to p-ethylacetophenone. Field testing of natural, synthetic, commercial Sirex lures and combinations there of caught no Sirex or Ibalia . Further characterization and quantification of A. areolatum and host pine produced volatiles may assist in transferring laboratory olfactometer results to the field.