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ABERRANT AUTUMNAL MIGRATION OF THE EASTERN POPULATION OF THE MONARCH BUTTERFLY, DANAUS P. PLEXIPPUS (LEPIDOPTERA: DANAIDAE) AS IT RELATES TO THE OCCURRENCE OF STRONG WESTERLY WINDS

Published online by Cambridge University Press:  31 May 2012

F. A. Urquhart  and
N. R. Urquhart
F. A. Urquhart
Affiliation:
Scarborough College, University of Toronto, West Hill, Ontario M1C 1A4
N. R. Urquhart
Affiliation:
Scarborough College, University of Toronto, West Hill, Ontario M1C 1A4
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Abstract

Strong westerly winds occurring during autumnal migration of the eastern population of the monarch butterfly in North America, affect those butterflies migrating from areas east of long. 90°. The following aberrant migratory routes are presented: (1) Migrants moving down the Atlantic coast pass through the Florida peninsula to western Cuba thence to the overwintering site in Guatemala and Honduras; (2) migrants forced over the Atlantic ocean eventually reach the Bahama islands and thence to Yucatan, or Honduras via Jamaica and other islands of the Caribbean Sea, to the overwintering site in Guatemala and Honduras; (3) migrants arriving in the eastern islands of the Greater Antilles may eventually arrive in the Cordilleran mountains of Columbia and northwestern Venezuela; (4) migrants from the Lesser Antilles may return, along with members of a first generation, in the spring without establishing an overwintering site—the fate of these few occasional spring migrants is unknown.

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 11 , November 1979 , pp. 1281 - 1286
Copyright
Copyright © Entomological Society of Canada 1979

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