Breeding season on the Dorrigo Plateau: Thought to be September to April Breeding season elsewhere - not confirmed but thought to be all year in the Tropics and limited to the warmer months in the cooler States.
Flight habit: Nocturnal - Active at night. Time to light - Dec 2018-2100 hrs., Mar 2019 19.30 to 21.30(6).,
Adult Moth: Size at rest - tip of thorax to tip of forewing: 40mm to 43mm Adult Moth: Size forewing tip to forewing tip: 40mm Mature larva: length - 70mm. Colour forms in the final instar are Brown or occasionally Green.
MIGRATION: Leaving a moth light on all night, one night in October 2013, more than 100 Hippotion scrofa Hawk Moths were attracted to our moth sheet. Whilst we have no evidence of proof there is a chance that these moths were migrating. Most of them came to light between 00.00 and 04.00.