. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 355 B. Pronotal spot minute.—hordei. BB, Pronotal spot large, distinct. C. Second abdominal segment longer than fourth and fifth together.— secale. CC. Second abdominal segment shorter than fourth and fifth together. —tritici. Apple Seed Chalcid (Syntomaspis druparum Boh.).—An introduced insect from Europe. Well distributed in the Northern States. Causes deformities and corky discolored streaks in the fruit when repeated puncturing occur
. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 355 B. Pronotal spot minute.—hordei. BB, Pronotal spot large, distinct. C. Second abdominal segment longer than fourth and fifth together.— secale. CC. Second abdominal segment shorter than fourth and fifth together. —tritici. Apple Seed Chalcid (Syntomaspis druparum Boh.).—An introduced insect from Europe. Well distributed in the Northern States. Causes deformities and corky discolored streaks in the fruit when repeated puncturing occurs. Adult.—A wasp-like chalcid, bright green with bronzy reflections; legs brownish-yellow; wings clear hyaline. Female }^ inch long, with long slender ovipositor; male smaller than female. June-July. Eggs.—Elongate-oval, one end prolonged into a slender twisted pedicle, yellowish-white. Laid in the seed and hatch in 6 to 8 days. Larva.—Spindle-shaped and curved; 3^^ inch long; five instars. Feeds on the soft kernel until September, then hibernates in the hollow seed until spring. Pupa.—Dark greenish when mature; dura- Fig. 237.—Pentarthron tion about 4 weeks. T S; Lti'olh.^^"- Control.—Collect and destroy apples lying under the trees. Clover Seed Chalcid (Bruchophagus funebris Howard). Adult,—A minute black four-winged fly, J-f 2 ii^ch long. Egg.—Elliptical with a slender tube, whitish and smooth. Larva.—A white stout footless maggot, }i5-}y{2 iiich long. Pupa.—Dark and less than Jf 2 ii^ch long. Life-history.—This insect usually winters over in the seed as a well-developed larva; the pupal stage is rather short, and the adult lays her eggs in May and June. The first of the adults of this brood appear in July and August, but some do not come out till the following spring. There is much overlapping of stages and the number of broods is difficult to determine. Folsom traced as many as three generations per year, with a possibility of Plea
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
