Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-24T11:07:08.197Z Has data issue: false hasContentIssue false
  • English
  • Français

FIRST REPORT OF THE ESTABLISHMENT OF AGAPETA ZOEGANA L. (LEPIDOPTERA: COCHYLIDAE) ON SPOTTED KNAPWEED, CENTAUREA MACULOSA LAMARCK, IN THE UNITED STATES1

Published online by Cambridge University Press:  31 May 2012

J.M. Story ,
K.W. Boggs  and
W.R. Good
J.M. Story
Affiliation:
Montana Agricultural Experiment Station, Western Agricultural Research Center, Corvallis, Montana, USA 59828
K.W. Boggs
Affiliation:
Montana Agricultural Experiment Station, Western Agricultural Research Center, Corvallis, Montana, USA 59828
W.R. Good
Affiliation:
Montana Agricultural Experiment Station, Western Agricultural Research Center, Corvallis, Montana, USA 59828
Get access Rights & Permissions [Opens in a new window]

Extract

Agapeta zoegana L. (Lepidoptera: Cochylidae) is a Eurasian root-mining moth introduced into North America for control of spotted knapweed, Centaurea maculosa Larnarck. The biology and host specificity of the moth were described by Müller et al. (1988, 1989). Early-instar larvae mine the epidermal tissues of the root crown. Older larvae mine the root cortex and endodermis and cause considerable damage, especially to small plants or when several larvae infest a single large plant. Larvae can migrate below ground to a new host plant if the initial knapweed plant has been destroyed. The moth overwinters as a larva in the root and emerges as an adult in June through August. Several generations per year may occur.

Type
Articles
Information
The Canadian Entomologist , Volume 123 , Issue 2 , April 1991 , pp. 411 - 412
Copyright
Copyright © Entomological Society of Canada 1991

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

Harris, P. 1990. The Canadian biocontrol of weeds program. pp. 61–68in Roche, B.F., and Roche, C.T. (Eds.), Proc. Range Weeds Revisited, A Pacific Northwest Range Management Short Course. Washington Cooperative Extension Service Publication 143.Google Scholar
Müller, H., Schroeder, D., and Gassmann, A.. 1988. Agapeta zoegana (L.) (Lepidoptera: Cochylidae), a suitable prospect for biological control of spotted and diffuse knapweed, Centaurea maculosa Monnet de la Marck and Centaurea diffusa Monnet de la Marck (Compositae), in North America. Can. Ent. 120: 109–124.Google Scholar
Müller, H., Stinson, C.S.A., Marquardt, K., and Schroeder, D.. 1989. The entomofaunas of roots of Centaurea maculosa Lam., C. diffusa Lam., and C. vallesiaca Jordan in Europe. J. appl. Ent. 107: 83–95.Google Scholar
Schroeder, D. 1985. The search for effective biological control agents in Europe. 1. Diffuse and spotted knapweed, pp. 103–119in Delfosse, E.S. (Ed.), Proc. VI Int. Symp. Biological Control Weeds. Vancouver, B.C., Canada.Google Scholar
Story, J.M. 1985. Status of biological weed control in Montana. pp. 837–842in Delfosse, E.S. (Ed.), Proc. VI Int. Symp. Biological Control Weeds. Vancouver, B.C., Canada.Google Scholar