. The insect and other allied pests of orchard, bush and hothouse fruits and their prevention and treatment . Insect pests; Fruit. 346 Insect Fests. If the weatliar is propitious tliey coiiinience to lay their eggs as soon as tlie females liave Ijeen fertilised. By means of the long egg-tuhe tlie female deposits her ova in the blossoms, mainh' on the anthers. The act of oviposition lasts, it seems, a varialjle period, for KoUar (9) says " the female took seven and a half minutes laying her ; Some I have oliserveil took ovev twenty minutes. The uumfier of eggs vailes ; sometimes
. The insect and other allied pests of orchard, bush and hothouse fruits and their prevention and treatment . Insect pests; Fruit. 346 Insect Fests. If the weatliar is propitious tliey coiiinience to lay their eggs as soon as tlie females liave Ijeen fertilised. By means of the long egg-tuhe tlie female deposits her ova in the blossoms, mainh' on the anthers. The act of oviposition lasts, it seems, a varialjle period, for KoUar (9) says " the female took seven and a half minutes laying her ; Some I have oliserveil took ovev twenty minutes. The uumfier of eggs vailes ; sometimes as marij- as thirty may be laid, at others, only ten or tveh'e. They are laid usually in a group in the blossom, and as several groups may be found it appears that mure than one female may attack a Idossom, Avhicb is evident ^Yhen v"e iind as many as 100 larva' in one fruitlet. The female appears to actually pierce not only the petals but even the calyx with her long ovipositor. r>esides laying them in unopened filossoms, I have frequently seen them on the opened blossoms, a fact which I notified ^liss Cirmerod, and which she le- coi'ded (10). The ova are white, lonnish, jiointed at one end and semi-transparent. They hatch in from four to si.\ days. By the end of ten days maggots may lie found on carei'ul examination, but they seem to i^row veiv sliJMly at lirst. By the first week in dune great numbers of the maggots may reach maturity and connnence to lea\"e the decav- ing fruitlets, the Juajority have left 1)\' the second or third week. Some are unalde to escape, as the pears do not always crack. unless there has been some rain, and thus reuuun on tl;e trees longer. TJie maggots wlioii matui'e are abnul 1 inchlon^; in colour lhe\". Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Theobald,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectpests, bookyear
