Peloridiidae

The Peloridiidae or moss bugs are a family of true bugs, comprising eighteen genera and thirty-four species. They are small, ranging in length from 2 to 4 mm, rarely seen, peculiarly lumpy, flattened bugs found in Patagonia (Argentina and Chile), New Zealand, eastern Australia, Lord Howe Island, and New Caledonia. Peloridiids are found amongst mosses and liverworts, commonly in association with southern beech forests. They have become known as moss bugs for their habit of feeding on mosses. They mostly feed on moss rhizoids, and also on wood-destroying fungi and lichens. Except for Peloridium hammoniorum, all Peloridiidae species are flightless. Their present distribution suggests they have existed since before the breakup of Gondwana. They are the only living members of the suborder Coleorrhyncha, which first appeared in the Upper Permian, over 250 million years ago.

==Evolution== Peloridiidae are the only extant family in the suborder Coleorrhyncha. Historically the Peloridiidae and their fossil kin were assigned to a variety of orders. In 1929 they were placed in the Homoptera, in 1962 they were placed in the Auchenorrhyncha, in 1963 they were placed in the Cicadomorpha, and in 1997 they were placed in Fulgoromorpha. However, essentially all sources since 1969 are in consensus that the Peloridiidae belong in Coleorrhyncha and that Coleorrhyncha is a sister group to the Heteroptera.