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朱砂叶螨(Tetranychus cinnabarinus)(蜱螨目叶螨科)种群在二月和三月滞育个体各占93.85％和93.58％,滞育螨未解除滞育。四月份有部分雌螨死亡,约三分之一滞育个体终止滞育。菜地卵量三月比二月增加10.73倍,卵为“夏型螨”所产。三月底之前卵不孵化。四月中旬之前所产卵在四月下旬初全部孵化。大部分幼螨在24和25日暴雨中死亡。春季,叶螨多集中在菜地田埂及公路边等环境稳定的场所活动,寄主主要有卷耳,婆婆纳,美洲紫菀和葎草等。
Tetranychus cinnabarinus (Acarina, Tetranychus cinnabarinus) populations each accounted for 93.85% and 93.58% of diapause individuals in February and March, respectively. Diapause mites did not release diapause. Some female mites died in April and about one-third of diapause individuals terminated diapause. In March, the amount of oyster in the vegetable field increased 10.73 times than that in February. The eggs were produced by “summer-type mites”. Eggs do not hatch before the end of March. The eggs will hatch before mid-April in late April. Most young mites die in heavy rains on days 24 and 25. In spring, spider mites and more concentrated in the vegetable fields and other roadside environment and stability of the site activities, the main host roll ears, Veronica, American aster and razor clam.