n.larval mite that sucks the blood of vertebrates including human beings causing intense irritation
同义词：chiggerjiggerredbug
英汉双解大词典
harvest mite(alsoharvesttick)
1.
N（名词）
the bright red parasitic larva of any of various free-living mites of the genus Trombicula and related genera, which causes intense itching of human skin 秋螨