. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig in the lo:i\'es, and when the yonng or lalâ ^â¢a^ get to work a few days later, the fohage may be pretty well destro>'ed. The adult beetles are broadly oval, flattened, and their baeks bear some resemlilance to a tortoise shell. The Two- striped Sweet Potato Beetle (,rav-!^'i'(/(i bivlttata Say) is one fom'tli of an ineh long, and has two black strijies on each of its yellow wing covers. The Golden Tortoise Beetle (Copto- cijcla bicolor Fab.) is larger and a bright, golden yellow. The Black-legged Tort
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig in the lo:i\'es, and when the yonng or lalâ ^â¢a^ get to work a few days later, the fohage may be pretty well destro>'ed. The adult beetles are broadly oval, flattened, and their baeks bear some resemlilance to a tortoise shell. The Two- striped Sweet Potato Beetle (,rav-!^'i'(/(i bivlttata Say) is one fom'tli of an ineh long, and has two black strijies on each of its yellow wing covers. The Golden Tortoise Beetle (Copto- cijcla bicolor Fab.) is larger and a bright, golden yellow. The Black-legged Tortoise Beetle (,C(7v<,^i'(/i) iiigripcs Oliv,') is five sixteenths of an mch long, and has gold wing covers, each bearing tlu'ee black spots. The lar\ ;t of tortoise beetles are known as " peddlers," because they often carr\- a mass of excrement on two spines at the hind end, and ele^â¢ate tltis over their ^ backs. There is one generation a year. The adults liide away in warm, dry places. To con- trol, dip the plants before set- ting out in arsenate of lead 1 pound to S or 10 gallons of water. The lar^-a? may be killed b^- apiilving Paris green Fig. UiC âA Tortoise Beetle. Cii;i/l)c-!a-/i! â "',; ;- bicolor. Enlarged and natural size, or arsenate ot lead to the plants Orisinal. after settmg. 159. â Work of Tortoise Beetles on eweet potato. 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 O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
