Genus Sclerocyphon The larvae feed on algae, and can live in fast moving water due to their streamlining. Pending ID – Sclerocyphon #1. Early November 2008 Strickland Falls, Ferntree Found clinging under stones in the Hobart Rivulet. #2. Early November 2012 Strickland Falls, Ferntree Dorsal and ventral surfaces #3. 5mm Mid November 2016 New Town Rivulet, Lenah Valley Dorsal surface Ventral Surface .