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目的观察洋葱害螨速生薄口螨形态。方法采集储藏洋葱样本,采用直接镜检法和水膜镜检法分离其中孳生的速生薄口螨,制备玻片标本,光镜下观察速生薄口螨形态。结果光镜下可见速生薄口螨成螨近长椭圆形,体后缘略凹。颚体小而高度特化。腹面足Ⅰ表皮内突愈合后成为胸板,足Ⅱ内突伸至中央,未连接,向后弯,有几丁质环2对,位于足Ⅲ~Ⅳ基节之间的生殖孔前。在足Ⅰ跗节上,除背毛d外,所有的刚毛均加粗成刺;足Ⅰ、Ⅱ胫节的感棒φ短且不明显。体背有一条显明的横沟。足Ⅰ~Ⅲ基节有基节上毛。每足末端为粗爪。雄螨生殖感觉器缺失,可见其阳茎。在两个几丁质环之间有一横缝为雌螨生殖孔。休眠体通常会有吸盘板,8对吸盘位于吸盘板上。结论储藏洋葱存在速生薄口螨污染,研究速生薄口螨的形态特征,对进一步研究其分类和生活史具有重要价值。
Objective To observe the morphology of fast-growing mites on the pest mites. Methods The onion samples were collected, and the fast-growing spider mites were isolated by direct microscopy and water microscopy. The morphological changes of spider mites were observed under light microscope. Results The light microscope showed fast-growing thin mouth mites into mites nearly oval, slightly concave posterior margin. Small and highly specialized jaws. Abdomen foot Ⅰ epidermal protrusion suddenly became a chest plate, foot II protruding to the central, unconnected, backward bend, with two pairs of chitin ring, located in the feet Ⅲ ~ Ⅳ base before the reproductive orifice. In the foot I 跗 section, in addition to dorsal hair, all bristles were thorn into thorns; foot Ⅰ, Ⅱ tibia sense sticks φ short and not obvious. Body back has a clear horizontal groove. Foot Ⅰ ~ Ⅲ base on the basal hair. The end of each foot is coarse claws. Male mite reproductive sensory missing, showing its Yang stem. Between two chitin rings there is a transverse seam for female mite reproductive pores. There are usually supine snake plate, 8 sucker on the sucker plate. Conclusion The fast-growing stinkbug mites contaminated by stored onions and the morphological characteristics of fast-growing stinkbug mites are of great value to further study their classification and life history.