Grylloblattodea are sometimes known as ice crawlers. They are a small group of only 27 species. 

Ice crawlers are wingless insects found only at high elevations, in the mountains of :

  • China
  • Siberia
  • Japan
  • western United States 
  • Canada

Cave-dwelling species have also been found in Korea and Japan. 

These insects are omnivorous and scavenge for food on the surface of snowfields, under rocks, or near melting ice. 

Most species are active below freezing and usually die above 10 degrees Celsius.