Canadian Forest Service Publications

A method for rearing overwintering larvae of Winthemia occidentis (Diptera: Tachinidae), a parasite of the eastern hemlock looper. 1973. Otvos, I.S. The Canadian Entomologist 105: 581-582.

Year: 1973

Issued by: Pacific Forestry Centre

Catalog ID: 5264

Language: English

Availability: Order paper copy (free)

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Winthemia occidentis Rhn. was introduced into Newfoundland to strengthen the parasite complex of the eastern hemlock looper. This tachinid has two emergence periods, one in the fall, the other in the following spring. A method was developed for rearing overwintering tachinid larvae to the adult stage. The best rearing results were obtained when the larvae were stored outdoors in jars of peat moss for the fall and winter period and removed to controlled temperature and humidity conditions in the spring, to complete development.