Grylloblattodea (Ice Crawlers) is an order of insects. There are 34 species of Ice Crawlers, in 6 genera and 1 family. It includes groups like Ice Crawlers.
Definition: overall repetitive or reflective pattern in the body of one individual of this taxon. eg: bilateral symmetry, rotational symmetry, radial symmetry
Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)