What’s that?

Meet the brown stink bug, one of a number of Asian insect species that have recently established and become a pest in the US, others being the harlequin ladybird, the emerald ash borer and the Asian longhorn.

Of these, only the harlequin ladybird is firmly established the UK, where it is now the most common ladybird species.

Insect curator at London’s Natural History Museum, Max Barclay, predicts that the brown stink bug could establish in parts of the South East of England and may spread further with climate change.

“The brown marmorated stink bug is very similar to many harmless native species, so we hope people won’t go out and start squashing everything similar!” he said.

The three sightings so far have been in Essex, Surrey, and in the Museum’s Wildlife Garden.

The warning came as the RHS released its latest tally of pests plaguing gardens, with slugs and snails topping the list.

The box tree caterpillar slipped down the rankings as its march slows across England and Wales.

Honey fungus topped the list of diseases, as it has for 25 years.

With more people spending time in their garden during lockdown, the RHS reported an 88% increase in pest and disease enquiries last year.

The RHS conducts research on a wide range of plant pests and disease. This work will move to new science laboratories at RHS Garden Wisley, which will be opened to the public in June.

RHS Pest List >>

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