. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1900 ] ENTOMOLOGICAL SOCIETY. 45 " So far as one is able to get at the real facts (i. e., apart from the opinions of ob- servers,) one is able to conclude that the movemeDts of Anosia Archippus, in North America, are very similar to those of Pyrameis cardui, (the Thistle butterfly) in ; After quoting from various sources, Mr. Tutt adds: " All these irregularities of habit will be certain to strike one who has studied the subject, as being readily par- alleled during a series o
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1900 ] ENTOMOLOGICAL SOCIETY. 45 " So far as one is able to get at the real facts (i. e., apart from the opinions of ob- servers,) one is able to conclude that the movemeDts of Anosia Archippus, in North America, are very similar to those of Pyrameis cardui, (the Thistle butterfly) in ; After quoting from various sources, Mr. Tutt adds: " All these irregularities of habit will be certain to strike one who has studied the subject, as being readily par- alleled during a series of years by the immigrants of Colias edusa and Pyrameis cardui, and their progeny in our own ; That is, Britain. After quoting a diversity of individual opinions and contentions, he continues, " However little definite information there is about the spring migration of A. archippus, a great number of observations have been recorded of a habit that is certainly unknown in any of our most observed Palaaarctic migrating species. This is the habit of swarming in che ; He then gives a large number of instances that have been observed by different persons, of autumnal swarms passing over various parts of the continent; then continues, " One other observation may be added, ihat of Bowles, who states that he has himself seen the shores of Lake Ontario, near Brighton, strewn with hundreds of their dead bodies, cast up by the waves, and which no doubt had formed part of a swarm, which from weakness or some other cause had perished while flying across the ; Then Mr. Tutt sums up his conclusions upon the subject thus : " From these and similar observations it has been concluded that the swarming of this butterfly in autumn is analogous with that of birds before commencing their [flight. southward, and that, after swarming, the butterflies return to the subtropical lands whence their grandmothers and great grandmothers set out in spring. It i
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
