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Ladybirds: Houses, Habitat & Food


19th May 2014

Ladybird Identification

There are approximately 46 species of ladybird in the UK but only 26 of these are easily recognised as ladybirds with the expected combinations of bright colours and spots. They are a small beetle with a roundish body. Their colours vary but the most common have a body that is bright red, black or yellow with black, red, yellow or white spots. Their size varies dependant on species, however ladybirds are no more than 12mm, with small heads, short antennae and short legs. The most common ladybird is the seven-spotted ladybird (red wing-casing with 7 black spots) which is approximately 6mm and has a wide distribution throughout the UK.

Seven spot ladybird

How do Ladybirds Reproduce?

Almost immediately after emerging from hibernation the ladybirds are ready to mate. Once they have done so, the female will lay her eggs in a sheltered place (commonly on the underside of a leaf). Normally the female will place her eggs close to a food source – preferably a large density of aphids. If such an abundant food source is unavailable, a female ladybird has the ability to delay laying their eggs for up to 3 months while waiting for a suitable site for her young. The eggs, yellow or orange in colour and laid in batches of up to 50 are about 1mm in length, will hatch within 10 days and the emerging larvae begin to feed, sometimes not even differentiating between the aphids, unhatched eggs or their siblings!

Continuing feeding for a period of weeks the larvae then enter a pupa stage which can last up to 10 days after which they will emerge as a nearly adult ladybird. As with most insects fresh from a cocoon, they will be soft or “teneral”, but within a short period of time their shells become hard and they are fully established adults.

Ladybird on nettles

Ladybird Nests in the UK

As with the seven-spot ladybird, most species can be found almost everywhere in the UK as long as there is a reasonable food supply available. Ladybirds are most commonly found in small shrubs, trees and grass. Details on their hibernation habits vary with species type. Sheltered areas such as garden sheds, under tree bark and in dense vegetation are prime targets and they can often be found huddled together in large groups in sites that they will return to year after year. There is speculation that the pheromones released by active ladybirds to deter predators during the warmer months are also used to attract other ladybirds to hibernate in the same place during winter. This communal fashion is thought to increase survival chances especially in the coldest of winters. However, with many species – over-wintering has yet to be recorded in Britain, thus maintaining their “mystery” status as to their hibernating habits.

Role of Ladybirds in The Garden

Ladybirds are extremely useful to us in our gardens with both the adults and larvae of numerous species feeding voraciously on the highly destructive aphids (greenfly / blackfly) as well as other soft-bodied insects and their larvae, providing natural protection for both our flower beds and vegetable crops.

How You Can Help Them

Ladybirds do not just feed on aphids, they also require a source of pollen for food and they have their own preferences as to which flowers attract them. With a tendency towards scented geraniums and marigolds, they also like nasturtiums and lavenders. Another benefit is a herb garden that includes dill, parsley and thyme among others. A well placed ladybird tower/beneficial insect home placed within flower beds is a source of shelter during the summer months (nice and close to their food supply), and suitable quarters for hibernation ready for the following year. Ladybirds are sensitive to the majority of synthetic insecticides which, if not directly causing them harm, do affect their food supply and thus force them to seek alternative habitats to feed and lay their eggs and refraining from the use of insecticides is always recommended for the good of all your garden wildlife.

Ladybird House