Lily beetle (Scarlet)

Symptoms
Holes appear in the foliage in spring, increasing through the summer and severe defoliation can occur. As a result of this, bulb growth can become stunted and the plant may not flower the following year.

Spot them
The adults are bright red beetles, 6-8mm long, with black head and legs, and their grubs are reddish brown. The adults are active from late March to autumn. In spring they lay clusters of red-brown eggs which develop into grubs. The grubs are covered with wet, black excrement and often feed in groups.