a primitive insect of the order Grylloblattidea, having a soft, unpigmented wingless body with long antennae and no eyes, living under stones in moderately high mountains of the western U.S., Japan, and Siberia
Word origin
[‹ NL Grylloblattidae a family of the order, equiv. to Grylloblatt(a) a genus (L grill(us) cricket + NL -o--o- + L blatta cockroach) + -idae-id2]