1985年7月中旬,在新疆北湾地区进行的里海伊蚊Aedes caspius(Pallas,1771)和斑梯蚋Titanopteryx maculata Meigen 1804的昼夜刺叮活动观察中发现,两种吸血昆虫一般均出现两个较明显的活动高峰.里海伊蚊有晨(早晨)、昏(黄昏)两个高峰,晨峰出现在日出前1～4h,昏峰则在日落后1～2h出现,昏峰大于晨峰.斑梯蚋多在白天活动,首峰出现在日出后1～3h,第二高峰在日落前2～7h出现,后峰通常大于前峰. In mid-July 1985, observations of the diurnal stinging activity of Aedes caspius (Pallas, 1771) and Titanopteryx maculata Meigen 1804 in the North Bay area of ​​Xinjiang found that two blood-sucking insects generally showed two Significant activities peak. Caspian Sea mosquito morning (morning), faint (evening) two peaks, the morning peak before sunrise in 1 ~ 4h, faint peak in 1 ~ 2h after sunset, faint peak greater than the morning peak. Plaque 蚋 more activities during the day, the first peak after sunrise in the 1 ~ 3h, the second peak before 2 ~ 7h appear, the latter peak is usually greater than the former peak.