. The pear thrips (Taeniothrips inconsequens Uzel) and its control in British Columbia [microform]. Pear thrips; Insect pests; Thrips; Insectes nuisibles, Lutte contre les; Thrips du poirier; Thrips. 25 This may be repeated several times before the animal embarks with a spring from the surface on which it is resting. The legs appear to in this initial movement of propulsion. As the adults settle after a flight, the wings are immediately tucked in and arranged straight along the abdomen, parallel almost to the mid-dorsal line, the anterior wing of each pair covering the posterior one. T
. The pear thrips (Taeniothrips inconsequens Uzel) and its control in British Columbia [microform]. Pear thrips; Insect pests; Thrips; Insectes nuisibles, Lutte contre les; Thrips du poirier; Thrips. 25 This may be repeated several times before the animal embarks with a spring from the surface on which it is resting. The legs appear to in this initial movement of propulsion. As the adults settle after a flight, the wings are immediately tucked in and arranged straight along the abdomen, parallel almost to the mid-dorsal line, the anterior wing of each pair covering the posterior one. That there is an undoubted migration of thrips from one variety of fruit tree to another is well borne out by facts. Thus, swarming from the soil was practically finished by April 12 at a time when the buds of Fluchess, Gravenstein :ind Red Astrachan apples were in a receptive condition. At this date there were practically no thrips (m the King and Wealthy varieties, their buds being as yet tightly closed. Later, as their l)uds open, the migration becomes more evenly distributed throughout a mixed orchard, indicating a migraticm from early to lute varieties. The same phenomenon applies to pears, of which, in the particu- lar orchard under observation, the Bartlett buds are the earliest to open and arc therefore first attacked, followe<l by the Bosc. Jules (luyot, Rivers' Princess and Louise Bonne. Of course, the migration takes place from apple to pear ill tlie same way as from ai)i)le to apple, or pear to i) I- M Flo. 8.—Uufhoss apple buds. May 3, 1917. -Viiult pear thripa may bo st'cn on thf bud on the right-hand side. (Orininal). Prunes, plums, and cherries, in virtue of their later development than apples and pears, are the last to be attacked, and the season is often well advanced licfore the cherry buds become infested. In the case of prunes and plums, very lareful watch is necessary, as the presence of only two or three thrips inside the small and tender l)uds w
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectpests, bookyear
