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REPORT OF THE ENTOMOLOGIST AND BOTANIST. 203 
covered all the young growth of fruit trees and were most destructive to the fruit crop. 
In some varieties of apples, the Gravenstein suffering most, the crop was utterly ruined, 
and in all it was greatly diminished. Young trees in the nursery were destroyed, or the 
growth for the year stopped.”—[Charles E. Brown. ] 
“Sussex, King’s Co., N.B., November 19.—On young apple trees the green aphis 
was in very large numbers, always with the attendant ants.”—|W. W. Hubbard. | 
Mr. Martin Burrell, of St. Catharines, Ont., has favoured me with the following 
useful observations on some Plant-lice of the orchard made by him during the past 
season :— 
“‘ As far as fruit-growiny is concerned the different species of Plant-lice have been 
by far the most serious pests we have had this season. I do not recall such a scourge 
for many years. Every kind of fruit tree was affected, and even the weeds did not 
escape. 
“ The principal damage has been doneby theCherry Aphis (Myzus cerast, Fab.), whose 
attacks on the sweet cherry of this peninsula were simply disastrous. I do not think I 
should be overshooting the mark if I said that half the crop was ruined. I saw many 
cases where not only the foliage was covered but even the fruit, and especially the 
stalks, with lice. The application of kerosene emulsion is sucha “messy ” business and 
the pressure of other work is so great at that season of the year that the pest is rarely 
checked on its first appearance. We shall have todin it thoroughly into our heads that 
the stamping out of the early generations of both the black and green aphis is the most 
important work of the day. The green species did an enormous amount of harm, not 
only to the growing shoots of young plum and pear trees, but to the foliage of the fruit- 
' ing trees, thereby impairing both the size and flavour of the fruit and further depressing ~ 
already congested markets by dumping on them large quantities of half-coloured, insipid 
and worthless plums. It is, of course, well known that the black species of lice are more 
resistant to insecticides than the green. I find that the kerosene emulsion should be 
diluted with only 6 or7 times the quantity of water to be effective against Myzus cerasi, 
while | to 12 or 14 is all right for the green forms. 
““Tobacco water should be on the strong side too. I did not find 1 pound to 6 
gallons thoroughly effective. A closer proportion would, I think, be advisable, and the 
tobacco should be boiled thoroughly. The lady-birds did good work this year among 
the lice, as might be expected, especially Coccinella 9-notata, Hbst., and Anatis 15- 
punctata, Oliv. Myzus cerasi, which usually keeps pretty much to the sweet cherries, 
appeared in my orchard of Early Richmond cherries toward the end of June, and by 
July 1st was increasing very rapidly. During this time the larve of Anatis 15-punctata 
were doing good work on the lice. By July 4th most of the larve had pupated. The 
pupal period was only from 4 to 6 days, and by July 10th any quantities of the beetles 
could be seen, the predominant colour being a creamy white or even lavender, with the 
characteristic markings. The lice by this time had decidedly lessened in numbers and 
I felt that I could leave them safely in the hands of our coccinellid friends.”—{ Martin 
Burrell. | 
THe Prum Apuis (Aphis prunifolii, Fitch) has been unusually abundant in many 
parts of the Dominion, being the Plant-louse most often inquired about in correspondence. 
Reports of Plant-lice on plum from Manitoba, the North-west Territories and British 
Columbia probably referred to a different species, Hyalopterus pruni, Fab., which is also 
stated by Prof. C. P. Gillette in the Proceedings of the Ninth Annual Meeting of the 
Associition of Economic Entomologists to have been particularly wide-spread and very 
injurious to plum trees in Colorado during the past summer.” 
‘‘ Woodville, Lot 2, P.E.I., June 10.—I send you specimens of an insect that has 
over-run our orchards of plums and Damsons. They cause the leaves to curl, dry up and 
die in a short time. Please let me know what they are and how to get rid of them.”—- 
[Michael McGrath. ] 
The specimens sent with this letter were Aphis prunijoli, Fitch. 
“ Nappan, Cumberland Co., N.S., July 8.—I send you specimens of Aphis prunifolii. 
These are a terrible pest on our plum trees. The kerosene emulsion is a sure cure if if 
