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Rapid differentiation of the sexes of adult Mecinus janthinus (Coleoptera: Curculionidae) based on external leg morphology

Published online by Cambridge University Press:  02 April 2012

V.A. Carney ,
J. Rau ,
S.M. Little  and
R.A. De Clerck-Floate
V.A. Carney*
Affiliation:
Texas Agricultural Experiment Station, PO Drawer 10, Bushland, Texas 79012, United States of America
J. Rau
Affiliation:
Agriculture and Agri-Food Canada, Lethbridge Research Station, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1
S.M. Little
Affiliation:
Agriculture and Agri-Food Canada, Lethbridge Research Station, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1
R.A. De Clerck-Floate
Affiliation:
Agriculture and Agri-Food Canada, Lethbridge Research Station, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1
*
1Corresponding author (e-mail: VACarney@ag.tamu.edu).
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Extract

The stem-boring weevil, Mecinus janthinus Germar (Coleoptera: Curculionidae), was introduced from Europe to Canada in 1991 to control the noxious weeds Dalmatian toadflax, Linaria dalmatica (L.) P. Mill., and yellow toadflax, Linaria vulgaris P. Mill. (Scrophulariaceae) (De Clerck-Floate and Harris 2002; McClay and De Clerck-Floate 2002). Since its release, M. janthinus has established well on Dalmatian toadflax in British Columbia (BC) and, to a lesser extent, southern Alberta (De Clerck-Floate and Miller 2002), and it is beginning to show promise as a successful control agent against this weed (De Clerck-Floate and Harris 2002). However, it appears that M. janthinus has not thrived on yellow toadflax in Alberta (McClay and De Clerck-Floate 2002).

Type
Articles
Information
The Canadian Entomologist , Volume 136 , Issue 6 , December 2004 , pp. 835 - 837
Copyright
Copyright © Entomological Society of Canada 2004

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References

De Clerck-Floate, R., Harris, P. 2002. Linaria dalmatica (L.) Miller, broad-leaved Dalmatian toadflax (Scrophulariaceae). pp 368–74 in Mason, P., Huber, J. (Eds), Biological control programmes in Canada 1981–2000. Wallingford, Oxon, United Kingdom: CABI PublishingGoogle Scholar
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