. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. FAMILY 177 Vedalia.—One species of i)articular interest is the Vcdalla. Tliis was introduced into California for the purpose of con- trolling the cottony-cushion scale and was so efficient in this respect that the scale insect has become of little economic im])ortance. Family Cucujidae.—Saw-toothed Beetle.—The family Cucu- jidoe includes, with other pests, the saw-toothed beetle {Sylvanus surmamensis), probably one of the most frequently noticed pests of stored cer
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. FAMILY 177 Vedalia.—One species of i)articular interest is the Vcdalla. Tliis was introduced into California for the purpose of con- trolling the cottony-cushion scale and was so efficient in this respect that the scale insect has become of little economic im])ortance. Family Cucujidae.—Saw-toothed Beetle.—The family Cucu- jidoe includes, with other pests, the saw-toothed beetle {Sylvanus surmamensis), probably one of the most frequently noticed pests of stored cereal foods, especially those in packages. It is a little, dark red-brown beetle with the '^ita^^^ff^. Fig. 126.—Adalia bipunctata: a, larva; h, mouth parts of same; c, claw of same; d, pupa; e, adult; /, antenna of same. All enlarged. (From Marlatt, Div. Ent., U. S. Dept. Ag.) edges of the prothorax strongly toothed. It is found in a great variety of food substances, including breakfast foods, yeast cakes, nuts, and dried fruits. All stages of the insect may occur in these substances, the larva being a slender, somewhat flattened creature, the pupa being about the shape of the adult. The adult tunnels through cases or migrates from place to i)lace, depositing its eggs adjacent to the materials in which the lar\{Te will grow. There are probably scNcral generations each year, especially in the food materials that are in warm situations. They should not be ]3resent in fresh-packed cereals, but owing to 12. 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 Osborn, Herbert, 1856-1954. Philadelphia ; New York : Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectb, booksubjectinsects
