. San Jose scale [microform]. San José scale; Fruits; Insect pests; Insectes nuisibles, Lutte contre les; Pou de San José; Fruit. the covermg or acale that preteoti them. To see the inaect it«el£, take a pin or the point of a knife and genUy lift the scale, and underneath wiU be found a pear- «h^ fat, yeUow, helpless body, the real insect, with no legs or eyes in the case of the fttnales, but only a long sucking tube beneatii its body projecting into the bark or tissues of the fruit beneath. (See Fig. 4.) Dkbotiptiok of thb Soalb in More Detail—Now that we have given a gwieral description of t
. San Jose scale [microform]. San José scale; Fruits; Insect pests; Insectes nuisibles, Lutte contre les; Pou de San José; Fruit. the covermg or acale that preteoti them. To see the inaect it«el£, take a pin or the point of a knife and genUy lift the scale, and underneath wiU be found a pear- «h^ fat, yeUow, helpless body, the real insect, with no legs or eyes in the case of the fttnales, but only a long sucking tube beneatii its body projecting into the bark or tissues of the fruit beneath. (See Fig. 4.) Dkbotiptiok of thb Soalb in More Detail—Now that we have given a gwieral description of the various stages of the scale found in summer, let us con- sider more earefuUy the three most important stages for identification, namely, the adult female, adult male and tiie black or winter stage. ^f'K^f^*. f'^^' ^'^^'- ^^ ^* 3A):—Shape circular or almost circular, nearly fla^ being slightly raised towards the centre; size to mm. in diameter, average about mm. (about 1-16 of an inch); general color grayish or ashy brown, with a lighter colored central area from 1-4 to 1-5 of the total diameter in .«'-»Si.» D % ^.il SSf? °' ?" '°^ *^"' •*• «»l*Wl about fltteen ttmes: A. Adult -^.5^* "'i*^ teunature youn« of various atacea aetUed down around or upon It; iJS-'lS^J m*l« «cale: 6, 6. b, three small Uaek scales, winter stage. B ATinlt 2S^^^„„f'.";.",•*"* °*»* ~*'*= *• »• **« li>unature blaek wtotw rtage ^^A .?• ^O"* «"J« >"^ «>on after birth. Note the nipples and Uttte groovS oSS"nll*£rw}i.^i^ 5ii r^^,:i *• <« -»~- '"- ^-00-. the A^.Tr 1 Width. This bghter area varies in color from a dirty white to yellowish-brown or yellow, and if very carefully examined with a good hand lens will usually be seen to consist of two portions: First an outer belt occupying a little more than half the space and an inner area usually a Uttle more elevated than the oute
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectpests, bookyear
