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AN EXCEPTIONALLY EARLY AND INFORMATIVE ARRIVAL OF ADULT ANAX JUNIUS IN ONTARIO (ODONATA: AESHNIDAE)1

  • Terese Butler (a1), Jane E. Peterson (a1) and Philip S. Corbet (a1)

Abstract

Two mature male adults of Anax Junius were seen in Ontario exceptionally early in spring, before emergence had begun locally, and very soon after an episode of unseasonably warm weather which was associated with the arrival from Texas of a low-pressure system.

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References

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Bagg, A. M. 1958. Fall emigration of the dragon-fly, Anax junius. Me Fld Nat. 14: 213.
Hughes, R. D. and Nicholas, W. L.. 1974. The spring migration of the bushfly (Musca vetustissima Walk.): evidence of displacement provided by natural population markers including parasitism. J. Anim. Ecol. 43: 411428.
Johnson, C. G. 1969. Migration and dispersal of insects by flight. Methuen, London.
ME 1974. Ministry of Environment. Meteorological Office, Kitchener, Ontario. Personal communication.
Nisbet, I. C. T. 1960. Notes on the migration of dragonflies in southern Ontario. Can. Fld Nat. 74: 150153.
Trottier, R. 1971. Effect of temperature on the life-cycle of Anax junius (Odonata: Aeshnidae) in Canada. Can. Ent. 103: 16711683.
Walker, E. M. 1958. The Odonata of Canada and Alaska, Vol. II. University of Toronto Press.

AN EXCEPTIONALLY EARLY AND INFORMATIVE ARRIVAL OF ADULT ANAX JUNIUS IN ONTARIO (ODONATA: AESHNIDAE)1

  • Terese Butler (a1), Jane E. Peterson (a1) and Philip S. Corbet (a1)

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