Bean Leaf Beetle 1 : Emergence Patterns of Adults from Overwintering Sites 2

Abstract
Emergence of the bean leaf beetle from overwintering sites occurred over a period of 3 mo, 60% occurring in May. Emergence began at a day-length of 13 h and an avg daily temperature of 26°C. Cold rain suppressed emergence. Variations in macro- and micro-habitats affected the time of 1st emergence and the length of the emergence period.