Circadian feeding rhythm of green-belly stink bug in corn cultivation

Abstract: The objective of this work was to evaluate the circadian feeding rhythm green-belly stink bug (Dichelops melacanthus) on corn (Zea mays), and correlate it with meteorological parameters. experiments were conducted in fields first (summer) second (fall) crop seasons, municipality Chapecó, state Santa Catarina, Brazil. Plants V3 V5 stages covered cages infested adults D. melacanthus. After 24 hours acclimation, number insects plant stem counted every three (at 6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 h). At night, a red led flashlight used visualize without interfering their behavior. Meteorological parameters monitored correlated plants. In differed among evaluation times, peak afternoon, evening, at night. Few found 6:00 9:00 h. There positive correlation between air temperature both seasons. milder regions, preferred time melacanthus is during night hours, which should be taken into account for precise management insect.