Females usually display for two or three hours and if after that time they have not attracted a mate they stop glowing and retreat into the grass until the following night. Females displays seem to be triggered by falling light intensity level. Peak glowing time is June and July but can last from late May to September. Normally it is the virgin female beetle that glows and attracts males for mating.
At night time they climb up grass stalks and glow while males fly around attracted to the characteristic glow. The female adult beetles also hide in the undergrowth during the day. They are nocturnal and are most active during moist conditions. Larvae live in sheltered places under rocks and wood, or hide in undergrowth during the day. They are rarely found on "improved" agricultural land. Glow-worms like chalky or limestone areas and prefer open grassland and hedges where snails and slugs are abundant.
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