弹尾纲动物俗称跳虫，是一类分布极广、体型甚微的节肢动物，与线虫、螨并称为三大土壤动物类群，在六足动物及节肢动物中有着其独特的分类学意义。跳虫在土壤生态系统中通过取食作用，参与碳和氮的循环，提高土壤肥力；因其对重金属污染物和有毒化学物质敏感，可做为土壤质量的指示生物。裸长角䖴属，隶属于弹尾纲中第一大科长角䖴科，全世界已报导有91种，中国已知46种。 文章回顾了弹尾纲的研究历史，记录了跳虫的分类学特征由外形、体躯和体色等向外部结构、毛序等特征深入的过程；介绍了跳虫的系统分类向现代4目分类系统发展的历程。详细介绍了通过Berlese-Tullgren漏斗烘烤法和吸虫器法采集跳虫的方法，以及玻片标本的制作过程。 文章对采集自湖北宜昌、安徽霍山、浙江安吉等地的裸长角䖴属6新种进行了详尽描述，分别是黄氏裸长䖴Sinella huangi sp. nov.、邓肯裸长䖴Sinella duncani sp. nov.、夷陵裸长䖴Sinella yilingensis sp. nov.、安吉裸长䖴Sinella anjiensis sp. nov.、百山祖裸长䖴Sinella baishanzuensis sp. nov.、霍山裸长䖴Sinella huoshanica sp. nov.。其中湖北宜昌的三个物种为洞穴种。同时给出了中国裸长䖴属的检索表。

Collembola, commonly known as springtails, is a group of arthropods with wide distribution and minimal body size. It is also called the three soil animal groups with nematodes and mites. It has unique taxonomic significance in hexapods and arthropods. Springtails participate in the carbon and nitrogen cycle and improve soil fertility through the feeding function in the soil ecosystem. And it can be used as an indicator of soil quality because it is sensitive to heavy metal pollutants and toxic chemicals. Sinella, belonging to Entomobryidae, the largest family of Collembola, has 91 species reported in the world and 46 species in China. The paper reviews the research history of the Collemnola class, The process of in-depth study of the taxonomic characteristics of springtail from external organ structure, chaetotaxy from body shape and color was recorded. And it introduces the development of the systematic classification of springtail to the modern classification system with 4 order. The method of collecting the springtails by the Berlese-Tullgren funnel baking method and the trematode method, and the manufacturing process of the slide specimens are described in detail. The paper describes the 6 new species of the genus Sinella collected from Yichang, Hubei, Huoshan, Anhui and Anji, Zhejiang Province. They are Sinella huangi sp. nov., Sinella duncani sp. nov., Sinella yilingensis sp. nov., Sinella anjiensis sp. nov., Sinella baishanzuensis sp. nov. and Sinella huoshanica sp. nov. respectively. Among them, three species in Yichang, Hubei Province are cave species. At the same time, the the key of Sinella in China is given.