The most remarkable case of an insect of another order mimicking a beetle is that of the Condylodera tricondyloides, one of the cricket family from the Philippine Islands, which is so exactly like a Tricondyla (one of the tiger beetles), that such an experienced entomologist as Professor Westwood placed it among them in his cabinet, and retained it there a long time before he discovered his mistake! Both insects run along the trunks of trees and whereas Tricondylas are very plentiful, the insect that mimics it is, as in all other cases, very rare. Mr. Bates also informs us that he found at Santarem on the Amazon a species of locust which mimicked one of the tiger beetles of the genus Odontocheila, and was found on the same trees which they frequented.
from: A.R. Wallace 1867: Mimicry, and Other Protective Resemblances
Among Animals
http://www.wku.edu/~smithch/wallace/S134.htm
