夏末和初秋时节，在宁静无风的黄昏，林间空地，花园以及河边的空中，常有一群群蚊子在盘旋飞舞。这是蚊子在“发情”。有些科学家把这些正在舞蹈的蚊子用捕虫网全部逮住，令人惊奇的是，这一群几乎都是雄蚊。这是因为，飞行时每只雄蚊的特殊腺体都散发出一种气味，几千只蚊子 In the late summer and early fall seasons, in quiet, windless evenings, groves, gardens, and riverside airways, groups of mosquitoes often hover. This is the mosquito’s “estrus”. Some scientists have caught these dancing mosquitoes with mosquito nets. Surprisingly, this group is almost all male. This is because the special glands of each male of mosquitoes emit an odor when flying, and thousands of mosquitoes