Omorgus amictus

Omorgus amictus (Haaf, 1954) AUSTRALIA: WESTERN AUSTRALIA, SOUTH AUSTRALIA. Omorgus amictus has only been recorded from the Nullarbor Plain in southern Australia (Scholtz, 1986b), from where are numerous records from various caves (Moulds, 2004; Richards, 1971; Scholtz, 1986b). It has been collected from both the entrance zone and the dark zone of mostly shallow caves, but the species has also been taken from the soil surface and from rabbit warrens (Richards, 1971). Richards (1971) found that Omorgus amictus is in caves associated with bird guano, but not with bat guano. Outside caves, it has also been found on carcasses and skins. Since they can survive equally on the surface and in caves, it should be considered a troglophile (Moulds, 2004; Richards, 1971). Since its association with bird (not bat) guano is facultative, it is also categorised as a (bird-) guanophile (Moulds, 2004).