Larvae will be found on tree ferns, including wheki, katotoe and silver fern.
Tree ferns (e.g. wheki, katote, silver fern)
Specialised setae pair on abdomen triggers defensive response when touched (drops from host vigorously twisting to hide in leaf litter).
Pupates in silk cocoon among host fronds or in detritus.
Variable wing pattern. Males have simple antennae. September to April. Fly at night, visiting flowers, attracted to light.
16 - 20mm