. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 60 THE REPORT OF THE No. 19 has been on the Canadian liat, as having been known to be taken in Canada for fourteen years- or more, but it has not yet been reported as having been seen in this city or vicinity, whilst C. 12-pxmctatns will soon prove itself to be the more abundant and destructive species of the two. Mr. E. M. Walker's observations on the spreading of Pieris protodice (Fig. 37) eastward, given in the Thirty-second Annual Report of the Entomological Society of Ontario, page 87, aroused
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 60 THE REPORT OF THE No. 19 has been on the Canadian liat, as having been known to be taken in Canada for fourteen years- or more, but it has not yet been reported as having been seen in this city or vicinity, whilst C. 12-pxmctatns will soon prove itself to be the more abundant and destructive species of the two. Mr. E. M. Walker's observations on the spreading of Pieris protodice (Fig. 37) eastward, given in the Thirty-second Annual Report of the Entomological Society of Ontario, page 87, aroused my interest in that butterfly, and I requested the collectors in London to be on the look-out for it ; but it was not observed here by any of them. The season was unfavorable for rapae (Fig. ), as it was not nearly so plentiful as in ordinary years, and it may well be regarded as yet more unfavorable for protodice, which has been designated " The Southern Cabbage ; In 1896 protodice was reported as plentiful at Windsor, Ont. It was also seen at Fig. 37. Pieris protodice ; colours, white and biacii. London where a few specimens of it had been taken the previous year. Since then it has not been observed in London. No further notice of its movements has been taken, so far as I have observed, until Mr. Walker reported it as plenti- ful at Leamington, Chatham and Sarnia. Which seems to indicate that it is recovering lost ground eastward, but that its appearance at London in 1894 and 1895 should be regarded as a sporadic outbreak, rather than as a permanent advance. The only fresh captured specimen of protodice that I have seen this year came from Leamington. Desiring to locate its present boundary eastward, I made a trip to Glencoe. which is about half way between Chatham and London im the Grand Trunk Railway, but found only rapae there. So it has not yet got thirty miles east of Chatham ; and if it is gradually extending^ eastward it will be several years ye
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
