CylindrachetaCylindraustraliaCylindroryctes Sandgropers are wholly subterranean apterous insects of the family Cylindrachetidae that may grow up to 7 cm (3 in) long.

Like many subterranean animals, little is known about their habits and diet, but Western Australian farmers have blamed them for substantial crop losses.

Although widely believed to be herbivorous, some have been found with animal remains in their gut.

"Sunny Sandgroper" was then used as a regular character, along with Fat Cat and Percy P Penguin, in TVW-7's Earlybirds morning children's show.

Western Australians have been known colloquially as sandgropers, with references to the name being found as early as the 1890s.