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HOSTS OF BANCHUS FLAVESCENS (HYMENOPTERA: ICHNEUMONIDAE) AND ATHRYCIA CINEREA (DIPTERA: TACHINIDAE) IN MANITOBA

1979; Cambridge University Press; Volume: 111; Issue: 6 Linguagem: Inglês

10.4039/ent111747-6

1918-3240

H. G. Wylie, G. L. Ayre,

Plant Parasitism and Resistance

Banchus flavescens Cress. and Athrycia cinerea (Coq.) were reared each year (1972–1975) from larvae of bertha army worm, Mamestra configurata Walk. (Lepidoptera: Noctuidae), collected during an outbreak of this species on rapeseed in Manitoba. Neither parasite was reared from other Lepidoptera collected at that time from rapeseed; two separate attempts to propagate the parasites on native Lepidoptera other than M. configurata were unsuccessful (Wylie and Bucher 1977; Ewen and Arthur 1976). Since 1975 M. configurata has been rare in Manitoba. In 1976 both B. flavescens and A. cinerea were reared from bertha armyworm larvae from temporary artificial populations on rapeseed at Glenlea, south of Winnipeg. The presence of the two parasites in this locality, where M. configurata was not found during the outbreak, suggested that both B. flavescens and A. cinerea parasitize other lepidopterous species in Manitoba, especially when bertha armyworms are not present.