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Biology

Both adults and larvae are voracious predators of aphids, and are one of the gardener's greatest natural allies (4). Ladybirds lay their yellow eggs in small groups on leaves (5). The black larvae have relatively long legs, and they are active predators. When threatened, adults exude a bright yellow distasteful substance from the joints of the legs, which dissuades potential predators from eating a ladybird. Adults overwinter in garden sheds, amongst vegetation, in crevices in fences and a range of similar locations, and can often be discovered in fairly large numbers during this time. They emerge in March and April (4). There is much folklore centred on ladybirds; ladybird numbers are said to indicate the number of aphids due that particular year, they are also widely thought to bring good luck, particularly with regards to romance (4). There are many rhymes associated with these beetles, the most well known in England begins: 'Ladybird, ladybird, fly away, your house is on fire and your children are gone' (4).

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