The adult moth of this species has brown wings with variable complex patterns. The forewings each usually have a curved pale triangle on the costa near the wing-tip, often edged by a dark triangle. The forewing margins have a cusp. The hindwing margins have an angle. The wingspan is about 2 cms. The species has been found in New Guinea, as well as in Australia in Queensland.
Hypertrocta brunnea is listed in the following regions: