Grylloblattella cheni

Chen's western cockroach has an ancient origin, which can be traced back to the Upper Lime Period about 300 million years ago. It can be called a "living fossil" of the class Insecta. As an extremely rare insect that ordinary people rarely see, there are only a few museums in the world that have preserved cockroach specimens, and the number is counted in units or tens.

The picture shows a female Chen's western cockroach and its living environment 

      Chen's western cockroach has a very small distribution area, limited to the cold regions between 33 and 60 degrees north latitude (North America and Asia). The cockroach is an omnivorous animal that feeds on corpses on the ice and vegetation under the ice. It develops very slowly and takes at least 7 to 8 years to complete a generation.  

Listed as the first level of the "National Key Protected Wildlife List".

Individuals are rare and extremely rare. Its distribution area is narrow. It is found in the fir forest at an altitude of 1750m on the north side of Kanas Lake in Xinjiang.

Yellow. The posterior edge of the pronotum is weakly concave, the outer edge of the nuchal plate has five long hairs, the inner edge has three long hairs, and the tarsal pad is short.