. A text-book of agricultural zoology. Zoology, Economic. CHEEMES, 245 remedies. Paraffin emulsion spraying is beneficial in some of the softer scales. Apple-sucker or Chbembs (Pstlla mali). A great deal of damage is done to the buds and blossom of apples by a small yellowish-green fly called the apple-sucker. The Psyllidce are H emiptera related to the Aphides, with 8- to 10-jointed antennae, which end in two short slender Fig. 125.—Apple-scokeb (Psylla mali). 1 and la, Pupa, nat. size, and mag.; 2 and 2a, imago, nat. size, and mag. (Whitehead.) UnUke plant-lice, they have three oc
. A text-book of agricultural zoology. Zoology, Economic. CHEEMES, 245 remedies. Paraffin emulsion spraying is beneficial in some of the softer scales. Apple-sucker or Chbembs (Pstlla mali). A great deal of damage is done to the buds and blossom of apples by a small yellowish-green fly called the apple-sucker. The Psyllidce are H emiptera related to the Aphides, with 8- to 10-jointed antennae, which end in two short slender Fig. 125.—Apple-scokeb (Psylla mali). 1 and la, Pupa, nat. size, and mag.; 2 and 2a, imago, nat. size, and mag. (Whitehead.) UnUke plant-lice, they have three ocelli, and their legs are formed for leaping. They Uve upon the sap, and, like Dolphins, discharge a sweet fluid, sought after by ants. The larvse are often protected by a cottony secretion. The species infesting the apple is found early in the year. 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, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
