Ladybirds swarm across Britain in biggest plague since 1976

Telegraph

11-07-2025

The biggest ladybird invasion since the summer of 1976 has been caused by a string of heatwaves.
Experts said that the bugs are being seen in 'very high numbers' this year because of the warm weather.
It comes after a swarm of the insects disrupted play during the cricket at Lord's on Thursday.
The insects distracted players and led to a brief pause in England's contest against India on the first day of the third Rothesay Test.
Ollie Pope, the England vice-captain, called it a first in the sport. He said after the match: 'I've never seen that, no. That's a first that the crowd have got that today.'
Prof Helen Roy, an ecologist and ladybird expert from the UK Centre for Ecology and Hydrology, said: 'Many species of aphid-feeding ladybird such as the seven-spot ladybird are being seen in very high numbers this year.
'This is a consequence of the high aphid numbers and warm weather.
'People are reporting many sightings to the UK Ladybird Survey through iRecord, which is fantastic.
'If people want to help insects and other wildlife in this weather they can leave shallow dishes with a little water for them. Also, we encourage people to leave the aphids in their garden on roses and other plants so there is plenty of food for ladybirds.'
Tim Coulson, professor of zoology and head of biology at the University of Oxford, encouraged people to 'learn to love' ladybirds.
He said: 'Warm weather means more aphids because they can complete each generation faster - insects, including ladybirds and aphids, tend to speed up their lives in warm weather.
'Ladybirds eat aphids, and an abundance of aphids mean ladybirds have a lot to eat.
'People should learn to love the ladybirds. They are effective predators of aphids, which can be a major pest of many plant species.
'Much in the way that wolves keep deer numbers in check in some parts of the world, ladybirds keep aphid numbers down.
'A swarm of ladybirds in a cricket game, even against India, should remind people of the role that predators play in keeping the ecology of earth in a healthy state.'
Dr Peter Brown, an associate professor in ecology and conservation at Anglia Ruskin University, said the last 'boom year' for ladybirds was during the hot summer of 1976, although there have been years in between when there has been a rise but the locations have been more isolated.
He said: 'In 1976 there were a lot of seven-spot ladybirds on the beaches as they searched for food and people thought they were invading – they were not, as they are native to the UK.'
Dr Brown, who is an organiser of the UK Ladybird Survey, added that the increase in numbers should be seen as a positive and the current warm conditions were the reason.