Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-24T17:44:31.053Z Has data issue: false hasContentIssue false
  • English
  • Français

MEDETERA ALDRICHII (DIPTERA: DOLICHOPODIDAE) IN THE BLACK HILLS: I. EMERGENCE AND BEHAVIOR OF ADULTS1

Published online by Cambridge University Press:  31 May 2012

J. M. Schmid
J. M. Schmid
Affiliation:
Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colorado2
Get access Rights & Permissions [Opens in a new window]

Abstract

The number of Medetera aldrichii Wheeler adults emerging daily in 1966 and 1967 was low and irregular. Peak numbers apparently emerged 20–30 days prior to mass emergence of Dendroctonus ponderosae Hopkins although the numbers fluctuated through the mass emergence period of the beetle. Densities of emerging adults averaged less than 1 per square foot of bark and never exceeded 6.0 per square foot. Densities of the emerging flies and beetles did not appear related.Adults mated on the bark surface of trees infested with D. ponderosae; mating habits are described.Females oviposited in degenerate resin ducts in the bark surface. Two eggs per duct were the modal number. Seven or more per duct were found in less than 5% of the ducts examined.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 6 , June 1970 , pp. 705 - 713
Copyright
Copyright © Entomological Society of Canada 1970

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bedard, W. D. 1933. The Douglas-fir beetle—its seasonal history, biology, habits, and control. Forest Insect Field Station, Coeur d'Alene, Idaho. (Unpub. report.) 67 pp.Google Scholar
DeLeon, D. 1935. A study of Medetera aldrichii Wh. (Diptera – Dolichopodidae), a predator of the mountain pine beetle (Dendroctonus monticolae Hopk.) (Coleo. – Scolytidae). Entomologica am. 15: 59–91.Google Scholar
Hopping, G. R. 1947. Notes on the seasonal development of Medetera aldrichii Wheeler (Diptera: Dolichopodidae) as a predator of the Douglas Fir bark-beetle, Dendroctonus pseudotsugae Hopkins. Can. Ent. 79: 150–153.CrossRefGoogle Scholar
Johnsey, R. L., Nagel, W. P., and Rudinsky, J. A.. 1965. The Diptera Medetera aldrichii Wheeler (Dolichopodidae) and Lonchaea furnissi McAlpine (Lonchaeidae) associated with the Douglas-fir beetle in western Oregon and Washington. Can. Ent. 97: 521–527.CrossRefGoogle Scholar
Kline, L. N., and Rudinsky, J. A.. 1964. Predators and parasites of the Douglas-fir beetle: Description and identification of the immature stages. Ore. St. Univ., Agric. Exp. Stn Tech. Bull. 99. 52 pp.Google Scholar
McCambridge, W. F. 1964. Emergence period of Black Hills beetles from ponderosa pine in the central Rocky Mountains. U.S. Forest Serv., Res. Note RM-32, 4 pp. Rocky Mountain Forest and Range Exp. Stn, Fort Collins, Colo.Google Scholar
McCambridge, W. F. 1967. Nature of induced attacks by the Black Hills beetle, Dendroctonus ponderosae (Coleoptera: Scolytidae). Ann. ent. Soc. Am. 60: 920–928.CrossRefGoogle Scholar