. The insect and other allied pests of orchard, bush and hothouse fruits and their prevention and treatment . Insect pests; Fruit. A'ppendix. 501 small, i-ouiul, slightly nipple, uiisiiig fi-om ;i depi-CKsofl surface ; sometimes this jioiiit is bn)\\ii (,i- Mark, at nthers yellow in ccjlour. The female scale is cii-culat- and vai-ies in diameter from -,i,- t(i ' inch. The cast skins of the lai\'a are central, the fiUly-formed scale is mottled n-rey, exrept over the central exuvije, where the colour varies from pale to reddisli-yellow", but in some it is dark lirown. The scale
. The insect and other allied pests of orchard, bush and hothouse fruits and their prevention and treatment . Insect pests; Fruit. A'ppendix. 501 small, i-ouiul, slightly nipple, uiisiiig fi-om ;i depi-CKsofl surface ; sometimes this jioiiit is bn)\\ii (,i- Mark, at nthers yellow in ccjlour. The female scale is cii-culat- and vai-ies in diameter from -,i,- t(i ' inch. The cast skins of the lai\'a are central, the fiUly-formed scale is mottled n-rey, exrept over the central exuvije, where the colour varies from pale to reddisli-yellow", but in some it is dark lirown. The scale is usually smooth Ijut sometimes slightly aunulated, Tlie male scale is oblong, nearly twice as long as wide, j^\, to -.\, inch long ; there is a nippledike prominence between the centre and the anterior margin of the scale. The male scale is darker than the female, sometimes almost lilack, but the larval scale covering the exu\-i;e is often light yellow as in the female. (Jften the central larval scale is black aiul the additions grey. The imme- diate co\-erings are dull \'ellowish- grey. These scales congregate thickly on the bark, overlapping one another, and are often covered with a Idack' sooty fungus {Fumago saJicin(i). The scales being so minute speci- mens may easily escape detection, but when present in. nundjers the grey colour shows up on the bai k clearly. " Trees seriously infested, Mr. Fletclier * says, " look as it with lime or ; It is found at the end of the branches and twigs in the pear, but on peach it attacks the older pai-ts as well Upon young gr(iwths the scale is surrounded by a nari'ow reddish band, especially around the female scale. (Jn young twigs, Hunter notices that the layer of tissue l.)e- t\\'een the outer Ijark and wood jiropei' Ijecomes dark red oi' purplish, the rings often being most striking. On the leaves the scales are found in one or iiKjre rows upon the upper side of the mid rib. Infested leaves
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectpests, bookyear
