Tortoise Beetle (Cassida vibex)

There are approx. 7,200 classified, highly variable and often very colourful species contained in the sub-family Cassidinae (Tortoise beetles) of which just 14 are to be found in the UK.

C. vibex is widespread and common in the southern half of the UK, preferring a warmer, dryer environment than that of the north.

This is a small (5.5 - 7mm) flattened beetle who's colouring, which varies between green and the very light green seen here, provides better camouflage than many of its compatriots. making it very easy to miss.

It can be found in various habitats including most types of grassland living primarily on thistles and knapweeds, but also burdocks and artichokes.

Reproduction takes place between April and July with adults present until September or October after which they overwinter in leaf litter, occasionally emerging on warmer days.

When threatened the beetle will retreat under its shell (like a tortoise) until the threat has passed.