. Cooperative economic insect report. Insect pests Control United States Periodicals. - 12 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES RUTHERGLEN BUG (Nysius vinitor Bergroth) Des at tis 11 iiJ1 co< Economic Importance: This lygaeid is considered one of the worst native pests of southern Australia. In outbreaks it may be as injurious as the North American chinch bug and its host preference is much greater. N. vinitor feeds on many succulent plants causing damage to such crops as tomaToes"^ onions, wheat, cotton and fruits. Observations show that one heavily-infested apricot orcha
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 12 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES RUTHERGLEN BUG (Nysius vinitor Bergroth) Des at tis 11 iiJ1 co< Economic Importance: This lygaeid is considered one of the worst native pests of southern Australia. In outbreaks it may be as injurious as the North American chinch bug and its host preference is much greater. N. vinitor feeds on many succulent plants causing damage to such crops as tomaToes"^ onions, wheat, cotton and fruits. Observations show that one heavily-infested apricot orchard yielded only 100 boxes of fruit compared with 3,000 boxes the following year when the insect was properly controlled. Damaging infestations usually occur in hot dry weather following rains although the pest appears in vast numbers only about once in 10 years. Distribution: Australia including Tasmania. Hosts: Wide host range including wheat, cotton, vegetables and fruits. On vegetables it is most important on beans, tomatoes, beets and potatoes. Although fruits, including citrus, are generally attacked, stone fruits are most susceptible, Life History and Habits; Overwintering adults commence breeding in early spring and lay eggs in the soil, in the glumes of grasses and in flower heads of weeds, particularly composites. The adults are active when disturbed in warmer periods and resemble flies in their movements. The eggs, placed in compact groups of 2 to 7, hatch in about 6 days. More than 400 eggs can be laid by a single female. Nymphs mature in about three weeks passing through five molts. The young insects do not migrate far from the food plants, but the adults will fly considerable distances. The life cycle requires about four weeks. Lygaeidae, Hemiptera. General Distribution of Nysius vinitor. 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 n
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