. San Jose scale [microform]. San José scale; Fruits; Insect pests; Insectes nuisibles, Lutte contre les; Pou de San José; Fruit. HOW TO XmifTiyT IHS BJkKJOSA SOAU. ArrJUMUtOB ow tarn Slv Josk Soau.—If we take a San Jot^ Scale infeited p^eoe of baik or an infested apple or pear in the rammer or early aatnmn and «xam- in* it caiefnlly we shall find the surface stadded with niuiali dot-like bodies. If 'm omah tiiaie, juice <» fat will ran out from beneath, and If we use a pin or a knife we can easily remove them from the bark or the skin of the fruit These little dot-like bodies or specks are
. San Jose scale [microform]. San José scale; Fruits; Insect pests; Insectes nuisibles, Lutte contre les; Pou de San José; Fruit. HOW TO XmifTiyT IHS BJkKJOSA SOAU. ArrJUMUtOB ow tarn Slv Josk Soau.—If we take a San Jot^ Scale infeited p^eoe of baik or an infested apple or pear in the rammer or early aatnmn and «xam- in* it caiefnlly we shall find the surface stadded with niuiali dot-like bodies. If 'm omah tiiaie, juice <» fat will ran out from beneath, and If we use a pin or a knife we can easily remove them from the bark or the skin of the fruit These little dot-like bodies or specks are scales. Now if we examine them more closely with a hand lens we shall see that there are a few circular scales several times larger than any of the others. These are the adult female scales, and they are usually grayish or grayish- brown in color. Further study will reveal a good many elongate or oblong scales about twice as long as broad, and luually grayish or blackish in color. These are the adnlt males. Examining those that are left we shall find large numbers of little black scales about half the axe of the males but quite circular. These are a very important stage of the immature females tnH males, because it is in this stage that all, or practically all, the San Jos£ scale winters, and by tiiem we usually identify the insect In addition to these three forms we shall find, especially on warm days, numerous little orange yellow scales rurning about. These are the lafvae, both. ^..f A^l^ « hs^^ piece of i^ple buk showing Um natural smooth surface. (») A todly Infested piece with the bark completely oovered by the scale. This niece has an aahy vpearance. (0) A ^buUw piece of bark to b, but showlnc the small circular areas from which dead adult female scales have dropped off. Natural siie. (Original.) males and females. It is only while in this stage that females can move about. Intermediate between these active little yellow larvae and the small black circular st^
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectpests, bookyear
