. 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. 13 LIFE-HISTORY. The Eo« (fig. 1). I. i.^^T; K *i * 'if "'"^â¢"l' â¦!"' e^ " minute, mea« mm. ong by mm. 1 roMl. It i« Blwhtly hean-shapcd and «>mewhat broader anteriorly than po terioriy. It U toIouHm with a very delicate chorion and no evident HnHn. inV,.»...iââ ⢠."_""â .\?i2"n®?J Period of egg-laying
. 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. 13 LIFE-HISTORY. The Eo« (fig. 1). I. i.^^T; K *i * 'if "'"^â¢"l' â¦!"' e^ " minute, mea« mm. ong by mm. 1 roMl. It i« Blwhtly hean-shapcd and «>mewhat broader anteriorly than po terioriy. It U toIouHm with a very delicate chorion and no evident HnHn. inV,.»...iââ ⢠."_""â .\?i2"n®?J Period of egg-laying.~Aduh>i wen- first ohserveil to be engaRetl in ovipositinR about April 18 and contniued to lay their eggs up to about Mav 10, after which date no female wan seen to ovipost. Xeverthelefss, many stragglers and late individuals must continue to do so for several days later, which explains in part the presence of newly-emerged larva? towards the end of Mav. The period of maximum oviposition extends from April 24 to May 7, during which time the scars caused by the ovipositor on the petioles of ffuil and leaves, and on the midribs and veins of the latter become very apparent. Towards the end of the egg-laying season the under surface of the sepals, especially of apples, receive a goodly quota of eggs. Isolated cases of oviposition on the young fruit anil pistiLs were , more particularly on cherries and prunes, bat it is im- probable that the resulting damage, if any, seriouslv affects the crop Jig. 1.âThe pear thripti, Taeniollirips ineomfquenii; oH?». X 93. (Original). Duration of egg-stagt.âTo determine the duration of the egg-stage a scries of <xi) was made. Cages of cylindrical mica-chimneys, fitted at each end with sleeves of cotton cloth, were drawni over and enclosed individual twigs t)f apples, i)ears, cherries, and prunes. These had previously been examined and (It termined to be exempt from punctures containing egg
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectpests, bookyear
