Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-25T13:55:26.252Z Has data issue: false hasContentIssue false
  • English
  • Français

LIFE HISTORY AND DESCRIPTION OF THE IMMATURE STAGES OF DACNUSA DRYAS (NIXON) (HYMENOPTERA: BRACONIDAE), A EUROPEAN PARASITE OF THE ALFALFA BLOTCH LEAFMINER (DIPTERA: AGROMYZIDAE) IN EASTERN CANADA1

Published online by Cambridge University Press:  31 May 2012

J.C. Guppy  and
F. Meloche
J.C. Guppy
Affiliation:
Plant Research Centre, Agriculture Canada, Ottawa, Ontario, Canada KIA 0C6
F. Meloche
Affiliation:
Plant Research Centre, Agriculture Canada, Ottawa, Ontario, Canada KIA 0C6
Get access Rights & Permissions [Opens in a new window]

Abstract

Dacnusa dryas (Nixon), a multivoltine parasite of the alfalfa blotch leafminer, Agromyza frontella (Rondani), has become established in eastern Canada. Adults deposit their eggs singly in the hemocoel of the actively feeding host larvae. A trophamnion forms between the chorion and the embryo and the elliptical egg swells, becoming spherical and transparent. On hatching, the trophamnion adheres to the 1st instar throughout its development. The first moult occurs in the newly formed puparium where development of the parasite is completed. Winter is passed as a mature larva within the soil-borne host. Descriptions of the immature stages are given.

Résumé

Dacnusa dryas (Nixon), parasite plurivoltin de l’agromyze de la luzerne Agromyza frontella (Rondani), s’est implanté dans l’est du Canada. L’adulte dépose ses oeufs individuellement dans l’hémocèle des larves de l’hôte en phase d’alimentation. Un trophamnios se développe entre le chorion et l’embryon et l’oeuf, d’abord elliptique, se gonfle, puis devient sphérique et transparent. À l’éclosion, le trophamnios adhère au premier stade larvaire, pour toute la durée. La première mue survient dans le puparium frais formé dans lequel se complète le développement du parasite. Celui-ci hiverne à l’état de larve pleinement formée à l’intérieur de l’hôte terricole. L’article présente des descriptions des stades immatures.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 3 , March 1987 , pp. 281 - 285
Copyright
Copyright © Entomological Society of Canada 1987

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

Cameron, E. 1940. The holly leaf-miner (Phytomyza ilicis, Curt.) and its parasites. Bull. ent. Res. 30: 173–208.CrossRefGoogle Scholar
Clausen, C.P. 1962. Entomophagous insects. Hafner Publishing Company, New York. 688 pp.Google Scholar
Drea, J.J., Jeandel, D., and Gruber, F.. 1982. Parasites of agromyzid leafminers (Diptera: Agromyzidae) on alfalfa in Europe. Ann. ent. Soc. Am. 75: 297–310.CrossRefGoogle Scholar
Griffiths, G.C.D. 1966. The Alysiinae (Hym., Braconidae) parasites of the Agromyzidae (Diptera). II. The parasites of Agromyza Fallén. Beitr. Ent. 16: 551–605.Google Scholar
Guppy, J.C. 1981. Bionomics of the alfalfa blotch leafminer, Agromyza frontella (Diptera: Agromyzidae) in eastern Ontario. Can. Ent. 113: 593–600.CrossRefGoogle Scholar
Guppy, J.C., Harcourt, D.G., Guibord, M.O'c., and Thompson, L.S.. 1984. Agromyza frontella (Rondani), alfalfa blotch leafminer (Diptera: Agromyzidae). pp. 11–13in Biological Control Programs Against Insects and Weeds in Canada (1969–80). Tech. Commun. CIBC.Google Scholar
Harcourt, D.G. 1973. Agromyza frontella (Rond.) (Diptera: Agromyzidae): a pest of alfalfa new to Canada. Ann. ent. Soc. Qué. 18: 49–51.Google Scholar
Harcourt, D.G., and Guppy, J.C.. 1982. Alfalfa blotch leafminer in Ontario, 1982. p. 34in Proceedings, 19th Northeast Regional Alfalfa Insects Conference, Wooster, Ohio.Google Scholar
Harcourt, D.G., and Guppy, J.C.. 1983. Alfalfa blotch leafminer in Ontario, 1983. p. 82in Proceedings, 20th Northeast Regional Alfalfa Insects Conference, Newark, Delaware.Google Scholar
Harcourt, D.G., Guppy, J.C., and Ellis, C.R.. 1987. Establishment and spread of Dacnusa dryas (Hymenoptera: Braconidae), a parasite of the alfalfa blotch leafminer in Ontario. Proc. ent. Soc. Ont. 117: 29–33.Google Scholar
Hendrickson, R.M. Jr., 1980. Field studies and parasites of Liriomyza trifoliearum (Diptera: Agromyzidae) in northeastern USA. N.Y. ent. Soc. 87: 299–303.Google Scholar
Hendrickson, R.M. Jr., and Barth, S.E.. 1978. Biology of the alfalfa blotch leafminer. Ann. ent. Soc. Am. 71: 295–298.CrossRefGoogle Scholar
Hendrickson, R.M. Jr., and Barth, S.E.. 1979 a. Introduced parasites of Agromyza frontella (Rondani) in the USA. N.Y. ent. Soc. 87: 167–174.Google Scholar
Hendrickson, R.M. Jr., and Barth, S.E.. 1979 b. Effectiveness of native parasites against Agromyza frontella (Rondani) (Diptera: Agromyzidae), an introduced pest of alfalfa. N.Y. ent. Soc. 87: 85–90.Google Scholar
Hendrickson, R.M. Jr., and Plummer, J.A.. 1983. Biological control of alfalfa blotch leafminer (Diptera: Agromyzidae) in Delaware. J. econ. Ent. 76: 757–761.CrossRefGoogle Scholar
Ivanova-Kasas, O.M. 1972. Polyembryony in insects. pp. 243–271in Counce, S.J., and Waddington, C.H. (Eds.), Developmental Systems: Insects, vol. I. Academic Press, London and New York.Google Scholar
Miller, D.E., and Jensen, G.L.. 1970. Agromyzid alfalfa leaf miners and their parasites in Massachusetts. J. econ. Ent. 63: 1337–1338.CrossRefGoogle Scholar
Nixon, G.E.J. 1948. A revision of the European Dacnusini (Hym., Braconidae, Dacnusinae). Ent. mon. Mag. 84: 207–224.Google Scholar
Short, J.R.T. 1952. The morphology of the head of larval Hymenoptera with special reference to the head of Ichneumonidae, including a classification of the final instar larvae of the Braconidae. Trans. Roy. ent. Soc. London 103: 27–84.CrossRefGoogle Scholar
Thompson, L.S. 1974. Alfalfa blotch leafminer, Agromyza frontella (Rond.). Can. Agric. Insect Pest Rev. 52: 5.Google Scholar