Abstract: Some opportunistic observations on the biology, habitat and larval host plant of the Queensland moth, Herpetogramma cynaralis (Walker, 1859)(Lepidoptera: Pyralidae) are recorded here for the first time. The pupal duration is at least 4-5 days. The host plant is the rainforest vine, Stephania japonica (Thunb.) Miers var. discolor (Menispermaceae). Larva pupate within leaf rolls of the host plant. The pupae are heavily parasitized by black wasps, Trichogramma sp. (Hymenoptera: Trichogrammatidae). The biology, hosts and parasite are compared to those of other Herpetogramma species in Australia and elsewhere.