Short Range Endemics and Other Terrestrial Invertebrates of the Gorgon Gas Development EIS/ERMP-Technical appendix C4

The term short-range endemics is used to describe invertebrate species such as trapdoor spiders, snails and millipedes, that are restricted in range by poor dispersal ability and are generally endemic to small areas.Over 40 potential short-range endemic invertebrate taxa were collected on Barrow Island during field surveys. The collection comprised spiders, scorpions, pseudoscorpions, centipedes, millipedes and land snails.The distribution of similar habitats to those represented with the Development area suggests that invertebrate taxa collected are widely distributed on Barrow Island. None of the invertebrate fauna known from the proposed Development area are listed under the Wildlife Conservation Act or as Priority fauna by CALM.A pseudoscorpion and a single specimen of a large, dark scorpion (Urodacus sp.), recently collected within the proposed Development area, appear to be new and undescribed species of conservation significance. Again, these species are expected to occur across Barrow Island in habitats similar to those within the Development area.