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FIRST RECORD OF STRONGYGASTER TRIANGULIFERA (LOEW) (DIPTERA: TACHINIDAE) AS A PARASITOID OF HARMONIA AXYRIDIS (PALLAS) (COLEOPTERA: COCCINELLIDAE) IN WESTERN NORTH AMERICA

Published online by Cambridge University Press:  31 May 2012

P. Katsoyannos  and
M.T. Aliniazee
P. Katsoyannos
Affiliation:
Department of Entomology, Oregon State University, Cowallis, Oregon, USA 97331-2907
M.T. Aliniazee
Affiliation:
Department of Entomology, Oregon State University, Cowallis, Oregon, USA 97331-2907
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Extract

The parasitic tachinid fly Strongygaster triangulifera (Loew) is widely distributed in North America (Stone et al. 1965). It parasitizes several Coleoptera and sometimes species of other orders such as Lepidoptera, Dermaptera, and Hemiptera (Sabrosky and Braun 1970). Existing records of S. triangulifera found in coccinellid hosts are from eastern North America. One describes low parasitization levels (<1%) in two indigenous species, Coccinella trifasciata perplexa Mulsant and Coleomegilla maculata lengi Timberlake, in Ontario, Canada (Smith 1960). The other existing record describes fluctuating parasitization levels (3.0–31.1% in 1993 and 0–6.5% in 1994) in the exotic species Harmonia axyridis (Pallas) in North Carolina and Virginia (Nalepa et al. 1996).

Type
Articles
Information
The Canadian Entomologist , Volume 130 , Issue 6 , December 1998 , pp. 905 - 906
Copyright
Copyright © Entomological Society of Canada 1998

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References

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