DISCRIMINATION BY HYSSOPUS THYMUS (HYMENOPTERA: EULOPHIDAE) AGAINST ORGILUS OBSCURATOR (HYMENOPTERA: BRACONIDAE), AN INTERNAL PARASITE OF THE EUROPEAN PINE SHOOT MOTH, RHYACIONIA BUOLIANA (LEPIDOPTERA: OLETHREUTIDAE)
- 1 December 1970
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 102 (12) , 1523-1527
- https://doi.org/10.4039/ent1021523-12
Abstract
When given a choice of large, unparasitised sixth-instar larvae of the European pine shoot moth, Rhyacionia buoliana, and small sixth instars containing developing Orgilus obscurator, Hyssopus thymus selected the former. This discrimination does not exist when the host larvae are in the third or fourth instars. The size of the contained O. obscurator larva is related to this change in behaviour. H. thymus shows no cleptoparasitic tendencies and is recommended as a safe candidate for introduction where O. obscurator exists.Keywords
This publication has 10 references indexed in Scilit:
- The Interaction Between Orgilus obscurator (Nees) (Hymenoptera: Braconidae) and Temelucha interruptor (Grav.) (Hymenoptera: Ichneumonidae), Parasites of the Pine Shoot Moth, Rhyacionia buoliana (Schiff.) (Lepidoptera: Olethreutidae)The Canadian Entomologist, 1964
- Zur Parasitierung des Kiefernknospentriebwicklers (Rhyacionia buoliana Schiff.) in NordwestdeutschlandZeitschrift für Angewandte Entomologie, 1964
- The Introduced Parasites of the European Pine Shoot Moth, Rhyacionia buoliana (Schiff.) (Lepidoptera: Olethreutidae), with a Critical Evaluation of Their Usefulness as Control AgentsThe Canadian Entomologist, 1961
- Resistance to Low Temperatures of the Overwintering Stages of Two Introduced Parasites of the European Pine Shoot Moth, Rhyacionia buoliana (Schiff.) (Lepidoptera: Olethreutidae)The Canadian Entomologist, 1960
- Immature Stages, Life Histories, and Behaviour of Two Hymenopterous Parasites of the European Pine Shoot Moth, Rhyacionia buoliana (Schiff.) (Lepidoptera: Olethreutidae)The Canadian Entomologist, 1960
- Parasites of the European Pine Shoot Moth, Rhyacionia buoliana (Schiff.), in OntarioThe Canadian Entomologist, 1959
- Preliminary Study of European Pine Shoot Moth Parasitism in Lower MichiganJournal of Economic Entomology, 1959
- Notes on the European Pine Shoot Moth in ConnecticutJournal of Economic Entomology, 1938
- Observations on the Parasites of the Pine-shoot Moth, Rhyacionia buoliana, Schiff.Bulletin of Entomological Research, 1930
- A Destructive Pine-Moth Introduced from EuropeJournal of Economic Entomology, 1914