. Cooperative economic insect report. Beneficial insects; Insect pests. - 290 - Life History and Habits: Overwintering adults appear in April and begin to feed on young buds. Mating starts in 3 to 4 days and oviposition 2 days later. Deep holes about 7 mm. are eaten into the young fruit after which the female deposits from one to three eggs in each cavity. Usually only one excavation is made in each fruit, but when populations are abundant, two or more egg cavities may be made. About 35 to 50 eggs are produced by each female. A gelatinous secretion from'the mouth is placed over the hole in the
. Cooperative economic insect report. Beneficial insects; Insect pests. - 290 - Life History and Habits: Overwintering adults appear in April and begin to feed on young buds. Mating starts in 3 to 4 days and oviposition 2 days later. Deep holes about 7 mm. are eaten into the young fruit after which the female deposits from one to three eggs in each cavity. Usually only one excavation is made in each fruit, but when populations are abundant, two or more egg cavities may be made. About 35 to 50 eggs are produced by each female. A gelatinous secretion from'the mouth is placed over the hole in the fruit. The eggs hatch in about a week and the larvae feed and develop in the soft seed or seed cavities of the fruit. They sometimes may leave the fruit and feed on roots of weeds and decaying vegetables. The larval period requires 40 to 50 days. Pupa- tion takes place in the soil and lasts 3 to 4 weeks. Late-maturing larvae hibernate in earthen cells and pupate in the spring. Adults live practi- cally all summer and continue to attack available fruits. There is one generation a year. Adults are active at night, feeding on all parts of the tree. Adults may be jarred from trees in the same manner as the plum curculio. Description: The adul purple in color, robus soft, dark red hairs, furrowed. Legs long, elliptical, milk-white mature, fat with row o of body. Pupae yellow head, venter of thorax thorns is found at ana Section in cooperation t is large, 10 mm. long, iridescent, reddish- t, with a long thick snout. It is covered with Body and wings densely, coarsely punctuate and the front pair particularly heavy. Eggs are , about mm. in Larvae 12 mm. when f thorn-like cuticular projections on each segment naked; long white cuticular thorns on back of and each abdominal segment. A pair of brown end of body. (Prepared in Plant Pest Survey with other ARS agencies.) CEIR 8(15) 4-11-58. Rjiynchites heros Adult Figure of adult from Iconographia Insectorum Japonicorum, 2nd.
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Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
