Boggomoss Snail, Dawson River Snail, Dawson Valley Snail  |  

Adclarkia dawsonensis

Status: Critically Endangered on the EPBC Act list

The boggomoss snail is a medium-sized snail characterised by a relatively thin, semi-transparent shell. The shell is almost flat with a slightly elevated spire and very small central depression. Shell diameter is between 21 and 26 mm, shell height is between 14 and 16 mm. Shell colour is light-brown to horn with a slight yellowish-green tinge (Queensland Department of Environment and Heritage Protection 2017). The animal is grey with a mustard coloured mantle and distinct irregular black blotches on the lung roof that are visible through the shell. The shell surface appears smooth but microscopically shows a series of covering ridglets that bear a fine elongate scale in fresh specimens (Queensland Department of Environment and Heritage Protection 2017).

Government evidence of impact of climate change:

Expand all Close all
  • Australian Government, Listing Advice, Adclarkia dawsonensis

    Other threats to the Boggomoss Snail that are currently recognised include at the site of the smaller population; clearing of surrounding vegetation makes the Boggomosses vulnerable to drying out.
    The species is subject to a number of ongoing threats changes to water flows in the Dawson River; drying out of Boggomoss habitat; fire; grazing; introduced weeds; timber collection and quarrying.
    The species is subject to a number of ongoing threats changes to water flows in the Dawson River; drying out of Boggomoss habitat; fire; grazing; introduced weeds; timber collection and quarrying.