maybe this is why we have so many different types of ladybird.
No interactions present.
If the harlequin are not from the uk where do they come from and how are they causing the decline of out own ladybirds. And which ones are our native ladybirds cos I see loads and never know which are which.
Harlequins are native to the far East: Japan, China, Korea and eastern Siberia. They were introduced into continental Europe and the USA, becoming established in America in 1988 and Europe in 2001.
They're thought to be causing/contributing to the decline of several of our native species both by eating them (particularly as larvae) and by outcompeting the natives for aphids.
As for which are our native species, have a look at the UK Ladybird Survey website - address is in my signature
Record your ladybird sightings!
Lat/Lng: 52.9028, -2.1582
OS grid ref: SJ894339