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The Diptera Medetera aldrichii Wheeler (Dolichopodidae) and Lonchaea furnissi McAlpine (Lonchaeidae) Associated with the Douglas-fir Beetle in Western Oregon and Washington1

Published online by Cambridge University Press:  31 May 2012

R. L. Johnsey ,
W. P. Nagel  and
J. A. Rudinsky
R. L. Johnsey
Affiliation:
Department of Entomology, Oregon State University, Corvallis
W. P. Nagel
Affiliation:
Department of Entomology, Oregon State University, Corvallis
J. A. Rudinsky
Affiliation:
Department of Entomology, Oregon State University, Corvallis
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Abstract

Preliminary studies on the association of the Douglas-fir beetle with species of Diptera found in windthrown Douglas-firs were conducted in 1962 and 1963. These studies revealed that larvae of Medetera aldrichii Wheeler preyed upon larvae and pupae bur only rarely on teneral adults of the Douglas-fir beetle whereas larvae of Lonchaea furnissi McAlpine did not kill the bark beetle in any stage. Adults of M. aldrichii lived up to i weeks at 70° F. on granary mites, and L. furnissi adults survived for more than 3 weeks on honey and Metrecal. Seasonal and daily emergence patterns from naturally infested Douglas-firs are presented and the effects of temperature and light on emergence and flight are discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 5 , May 1965 , pp. 521 - 527
Copyright
Copyright © Entomological Society of Canada 1965

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References

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