. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Insects, Injurious and beneficial. FAMILY CUCUJID.^ 177 Vedalia.—One species of particular interest is the Vedalia. This was introduced into Cahfornia for the purpose of con- trolHng the cottony-cushion scale and was so efficient in this respect that the scale insect has become of little economic importance. Family Cucujidae.—Saw-toothed Beetle.—The family Cucu- jidce includes, with other pests, the saw-toothed beetle (Sylvanus siirinamensis), probably one of the most frequently noticed pests of stored cerea
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Insects, Injurious and beneficial. FAMILY CUCUJID.^ 177 Vedalia.—One species of particular interest is the Vedalia. This was introduced into Cahfornia for the purpose of con- trolHng the cottony-cushion scale and was so efficient in this respect that the scale insect has become of little economic importance. Family Cucujidae.—Saw-toothed Beetle.—The family Cucu- jidce includes, with other pests, the saw-toothed beetle (Sylvanus siirinamensis), 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. Fig. 126.—Adalia bipundata: a, larva; h, mouth parts of same; c, claw of same; r^, pupa; e, ad\ilt; /, 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 place, depositing its eggs adjacent to the materials in which the larvae will grow. There are probably several generations each year, especially in the food materials that are in warm situations. They should not be present 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, booksubjectinsects, bookyear1916
