“…To date, G. variegata have only been found emerging from overwintering hosts in the region of the trials, therefore the field test was conducted June 13 to July 14, 2003 (average maximum and minimum temperatures: 27.1 ± 4.4°C and 12.8 ± 3.2°C), when wild adult G. variegata would be expected to be seeking hosts. In previous laboratory trials, parasitism of obliquebanded leafrollers by M. linearis was not significantly different when the females were held under summer conditions (fluctuating daily between 30.3 to12.0°C) versus fall conditions (Cossentine et al, 2005); M. linearis field trials were carried out August 1 to September 3, 2003 (average maximum and minimum temperatures: 30.3 ± 2.9°C and 14.9 ± 2.0°C) when wild summer generation larvae would potentially be present in the orchard. In previous laboratory trials, A. polychrosidis fecundity was significantly higher when the females were held under fall conditions (fluctuating daily between 17.5 to 4.0°C) versus summer conditions (Cossentine et al, 2005), therefore A. polychrosidis field trials were carried out September 13 to October 4, 2004 (average maximum and minimum temperatures: 18.1 ± 3.0°C and 7.8 ± 2.3°C).…”