Copidognathus riguus Bartsch, 2015
Record associated with mangroves: End of Lim Chu Kang Road, Singapore, mats of green algae amongst Avicennia mangrove trees (Bartsch 2015).
Record from other habita ts: Pulau Ubin, OBS Camp NW, Singapore, sediment from beach (Bartsch 2015).
Distribution: Singapore.