Any of various small, six-legged larvae of mites of the family Trombiculidae, parasitic on insects, humans, and other vertebrates. The chigger's bite produces a wheal that is usually accompanied by severe itching. 恙螨寄生在昆虫、人和其它脊椎动物上的恙螨科的形小且有六条腿的螨幼虫。被恙螨叮咬后会出现疹块，并通常伴有奇痒
