The Caterpillar of this species is initially green with pale stripes. Later the stripes are replaced by speckles with two bright yellow spots on the last abdominal segment. Mature instars often become brown. It is an agricultural pest, attacking for example - Turnips, Sugar Beet, Clover, Grass pasture, and Potato.
The forewings of the adult moth vary from dark brown to black. On the paler specimens, a pattern of light and dark brown may be discernible. Many have a pale spot near the middle of each forewing. The hind wings are pale with incomplete wide black borders. underside.
The species occurs throughout Australia.
Neumichtis nigerrima is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | Albury, Wodonga | South Coast | Barwon South West