A
loveliness of ladybirds
Ladybird,
ladybird, fly away home,
Your
house is on fire and your children are gone,
All except
one and her name is Ann,
And she has crept under the frying pan.
Seven-spot ladybird (Coccinella septempunctata)
Look carefully and you can see a reflection of our house in the beetle's shiny wing case - apex of roof at middle spot!
Every summer, ladybirds (Coccinellidae) from Europe visit UK shores, to swell resident populations. This year there has been a veritable invasion. The last significant incursion was in 2009, when hot weather caused a glut in the numbers of aphids and a consequent rise in the ladybird populace.
However, the present invasion is akin to the astonishing 1976 influx, and even caused a pause in the cricket. ‘Ladybirds stopped play’ is not something we’re accustomed to hearing. The cricketers on Day One of the Third Test match between India and England at Lord’s cricket ground, were not impressed when a loveliness of ladybirds invaded the pitch. Play was stopped for seven overs (an over is a set of six bowled balls) towards the end of the day’s play. Bear in mind that ladybirds bite. Their bites may be minor, but can be irritating. Several attacking at once might not be very pleasant.
In spells of hot weather, insects regenerate more quickly. Ladybirds are to be encouraged and welcomed, as they are rapacious predators, particularly of aphids, mites, and scale insects. Each ladybird larva can consume around 350 aphids daily, so they are valuable visitors to gardens and farms.
Ladybirds are known as an umbrella species because their presence or absence indicates the health of the overall ecosystem. They are also an important part of the food chain, providing sustenance for birds, arachnids, and amphibians.
They are not primarily pollinators, though they will feed on pollen and nectar. In particular, they like flowers such as yarrow, marigolds, and nasturtiums. They are also attracted to herbs including thyme, parsley, and fennel.
Harlequin ladybird (Harmonia axyridis)Since 2004, invasive Harlequin (Harmonia axyridis) ladybirds have become a threat to native ladybirds. Harlequins are bigger, eat more aphids more quickly, and reproduce quicker than native ladybirds. They also eat the eggs and larvae of ladybirds, moths, and butterflies, thus upsetting the natural balance in Nature.
They come in many patterns and are attractive creatures. It is to be hoped that the two species – native and invasive – can eventually cohabit. It is probably a vain hope.