Cryophile
Guides
Grylloblattodea
ice crawlers, rock crawlers
Grylloblattodea is a small order of extremophile insects commonly known as ice crawlers or rock crawlers. These wingless insects are adapted to cold environments and are found in montane habitats, caves, and subalpine forests across western North America and northeastern Asia. The order comprises approximately 25-30 described species in five extant genera, though significant undescribed diversity is suspected. Grylloblattids are predatory, feeding on other arthropods, and show remarkable cold tolerance. They are considered a relict lineage with ancient origins, closely related to Mantophasmatodea within the clade Xenonomia (order Notoptera).