- Unknown distribution. Recorded only from Fiji on two weeds: crowsfoot and barnyard grasses. The Oulema species unknown. Another species, Oulema melanopus, is recorded from Asia, Africa (north), North America, Europe, as a major pest of cereals.
- Eggs laid on leaf mid-vein; larvae hump-backed, covering themselves in faecal matter. Pupate on soil. Adults with red heads and thorax and black wing cases; often seen 'mate-guarding'.
- Larvae feed on the surface of leaves setting back plant growth so that the grasses are overgrown by other weed species. Damage greatest on crowsfoot grass.
- No control measure required. Whether or not the beetles will move to other grasses, i.e., those of the grasslands of western Viti Levu, Fiji, is unknown.
- Alternatively, the Fiji Oulema species may have potential as a biocontrol organism attacking particular weed grasses.