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Appearance
Many species, very variable in size (1/8" – 1" 3/16" long).
Colour — black, brown, green or violet (often metallic).
Lifecycle
Usually completed in 1 year.
Larvae are active and voracious predators feeding on caterpillars, slugs, snails and vegetable matter.
Habits
Beneficial insects. Predatory and usually nocturnal.
Do not breed indoors and an invasion of large numbers may be due to disturbance outside of the building.