The spring leafroller complex in organically managed apple orchards in the north of the Okanagan valley in British Columbia is predominantly composed of Archips rosanus (Linnaeus) and Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), unlike the predominantly C. rosaceana and Pandemis limitata (Robinson) (Lepidoptera: Tortricidae) complex in the south of the valley. Twenty-three parasitoid species, including three possible hyperparasitoids, were reared from leafrollers in the northern organic orchards from April through June in 2001 and 2002, of which 15 of the parasitoid species represent new parasitoid records for the leafroller complex in the Okanagan valley. The most commonly reared parasitoid in the northern organic orchards, Enytus eureka (Ashmead) (Hymenoptera: Ichneumonidae), is not common in southern orchards. Meteorus trachynotus Viereck, Microgaster epagoges Gahan and Apanteles polychrosidis Viereck (Hymenoptera: Braconidae) were also frequent parasitoids within the northern leafroller complex. Apanteles fumiferanae Viereck and Macrocentrus ancylivorus Rohwer (Hymenoptera: Braconidae) as well as Glypta erratica Cresson and two unidentified species of Temelucha Förster (Ichneumonidae) were reared for the first time as leafroller parasitoids within apple orchards in British Columbia. The presumed hyperparasitoid species, Mesochorus flaviceps Provancher (Ichneumonidae) and Perilampus fulvicornis Ashmead and Perilampus prothoracicus Smulyan (Hymenoptera: Perilampidae), were also reared for the first time from this host complex. Differences in the north and south Okanagan leafroller communities and their parasitoids are discussed with respect to implications for future orchard biological control.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 83 • No. 4