Seed ticks, the first-stage larvae of hard ticks, are not always recognized. They are tiny (0.6 mm) and have six legs, rather than the eight legs found on nymphal and adult ticks. Seed ticks may transmit Rocky Mountain spotted fever, tularemia, babesiosis and Lyme disease. Pediculocides are effective in removing the larvae.
幼蜱是硬蜱的第一阶段幼虫，并不总是容易被识别。它们很小（0.6毫米），有六条腿，而不是若蜱和成蜱的八条腿。幼蜱可能传播落基山斑疹热、兔热病、巴贝斯虫病和莱姆病。灭虱剂对清除幼虫有效。
