Rosemary Beetle - Chrysolina americana


Attractive, 8mm long, metallic green beetle with purple stripes.

Identification difficulty

To be found on Rosemary, Lavender, Thyme, Sage and some other related plants.

When to see it

May to October.

Life History

The soft-bodied grubs are greyish white with five darker longitudinal lines; fully grown larvae are 5 to 8mm long.

UK Status

The beetle is a native of southern Europe that has become an established pest in Britain since the 1990s especially in the south east of England. It seems to be rapidly colonising the country.

VC55 Status

Numbers in Leicestershire and Rutland have increased rapidly in recent years.

Further Information

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map