白星花金龟Potosia(Liocola)brevitarsis Lewis近年来为害玉米较严重,作者于1983-1985年对该虫进行了初步观察。此虫在天津地区每年发生一代,以老熟成虫越冬。各虫态平均历期:卵11天;幼虫一龄9天,二龄13天,三龄280天,共计302天;成虫寿命45天,雌虫产卵前期5天。成虫白天活动,取食、交配,飞翔能力很强,稍受惊立即飞走,雨天停止活动。卵产 Potosia (Liocola) brevitarsis Lewis In recent years, damage to maize is more serious. The author conducted a preliminary observation of the insect in 1983-1985. This insect occurs in Tianjin each generation a generation to mature winter overwinter. The average duration of each state: eggs 11 days; larvae first nine days, two 13 days, 280 days of age three, a total of 302 days; adult life expectancy 45 days, 5 days pre-oviposition. Adult activities during the day, feeding, mating, strong ability to fly, a little frightened immediately fly away, rainy days to stop activities. Ovulation