. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. 134 ECONOMIC ENTOMOLOGY Orthezia and Hemichionaspis in addition to the Mealy Bugs already described. Soft Brown Scale {Coccus hesperidum Linn.).—An oval, flat scale, straw colored to dark brown; viviparous. Occurs on oleander, Cycas, ivy, rubber plant, box elder. Hemispherical Scale {Saissetia hemisphcerica Targ.).—An oval, polished, rich brown scale; oviparous. Occurs on palms, orchids, ferns, asparagus, oleanders (Fi
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. 134 ECONOMIC ENTOMOLOGY Orthezia and Hemichionaspis in addition to the Mealy Bugs already described. Soft Brown Scale {Coccus hesperidum Linn.).—An oval, flat scale, straw colored to dark brown; viviparous. Occurs on oleander, Cycas, ivy, rubber plant, box elder. Hemispherical Scale {Saissetia hemisphcerica Targ.).—An oval, polished, rich brown scale; oviparous. Occurs on palms, orchids, ferns, asparagus, oleanders (Figs. 82 andj83). g^Q^^^^^ginnniEEffi MW<i^. Fig. 86.—Types of antennae of aphids: a, Chailophorus; b. Aphis; c, Schizoneura; d, Pemphigus (apterous); e, Chermes; f, g, sensoria. Oleander or Ivy Scale {Aspidiotus hederce Vail.).—A circular, flat, grey or white scale, with a pale orange-colored centre. Occurs on oleander, ivy, box wood, orange, palm, cycad. Circular Scale (Chrysomphalus aonidum Linn.).—A circular dark brown scale with a grey nipple in a reddish brown ring. Occurs on Araucaria, citrus, oleander, begonia, and rubber 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 Lochhead, William, 1864-. Philadelphia, Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
