The microhabitat and reproductive behaviour of the non-sexually dimorphic D. cannacrioides are described. An outstanding feature is the unusual method by which ovipositing females attach egg-filaments to floating roots of a liana. Use of the term "epiphytic" (sensu MATHAVAN & PANDIAN, 1977, Hydrobiologia 54: 257-272) instead of "exophytic” to describe such oviposition is recommended.