2006 Annual Report 4d.Progress report. This report serves to document research conducted under a trust agreement between ARS and the Washington Tree Fruit Research Commission. Additional details of research can be found in the report for the parent CRIS 5352-22000-017-00D Management of Insect Pests of Temperate Tree Fruit Crops Behavioral assays demonstrated that male pear psylla of the winterform generation are attracted to volatile chemicals from post-diapause females. The behavior can be induced in males by exposing diapausing females to long-day photoperiods, which act to prompt termination of diapause.