Cactoblastis cactorum eggs at the Field Station, Chinchilla, 1928

A mound of Cactoblastis cactorum eggs collected from moths at the Commonwealth Prickly Pear Field Station at Chinchilla, 1928.

The description supplied with the image states that the mound contains 2,200,000 eggs of Cactoblastis, deposited 10 October 1928. For reference, a tumbler holds about 120 sticks, with each stick containing 60-120 eggs.