在我们看不见的地方，生活者各种各样的动物，也许就在你的睫毛里面，就有一个令人惊奇的生物世界。
毛囊蠕形螨（Demodex folliculorum）是一种很小的虫子，不到0.4mm长，寄生于人和哺乳动物的毛囊和皮脂腺内，通常在鼻子、前额、脸颊、下巴以及睫毛的根部。
毛囊蠕形螨的螨体细长呈蠕虫状，仅仅有一些没有完全退化的腿。油性皮肤和化浓妆不深度清洁的人群容易大规模孳生这种螨虫，不过大部分的成年人都或多或少的带有一些毛囊蠕形螨。当这些螨虫大规模的聚集到一个毛囊内的时候，就容易引起发炎和感染。
这种螨虫颚体宽短呈梯形，位于虫体前端，螯肢1对，针状，须肢分3节。躯体分足体和末体两部分，足体腹面有足4对，粗短呈芽突状。雄螨的阳茎位于足体背面的第2对足之间，雌螨的生殖孔在腹面第4对足之间。
译文:
The Animal Hiding in Our Lash
There live different kinds of animals in the place where we are not able to see. Perhaps in your lash there is a staggering animal world.
Demodex folliculorum is a kind of super small worm. which is no longer than 0.4mm, parasiting in the hair-folicle and sebaceous gland of men and mammals, gradually in nose, forehead, cheek, chin or the root of the lash.
The body of demodex folliculorum is slim and is in a worm shape, it has just several uncompletely revolutioned legs. Those who are oily skin and those who are adorned with dense dots of pigment without deeply clean are easy to breed this kind of acarid in a large scale. However, most of the adults have some demodex-like acarids, more or less. When these acarids gather into a hair-follicle in a large scale, it is easy to get inflamation and infection.
The gnathosoma of this acarid looks like a echelon, lying at the front of the body. It also has a pair of chelicera in an aciform, and the pedipalp is divided into three parts. The body consist of opisthosoma and ligand, there exist four pairs of legs at the ventral side of the ligand, which are tubbiness and are in a gemmule-type. The aedeagus of male acarid lies the back of the ligand, just between the second pair of legs while the gonopore of female acarid lies between the fourth pair of legs at the ventral side.