Appearance
They may grow up to 17 mm long, and are camouflaged in shades of green and brown. Like many so-called "stink bugs", they may release unpleasant odours when disturbed.Distribution
The hawthorn shield bug is found across Europe, from Portugal to Russia, and is common in the southern part of Great Britain. Its distribution appears to be spreading north, being only reported as far north as Birmingham in 1892, but having now extended its range to Northern England and even the Scottish Highlands.In Britain and North Western Europe the species is generally active between the months of April and October, although specimens can reappear from hibernation during periods of unseasonable warm weather in the winter.
The hawthorn shield bug is a distinctive species, but could be confused with the birch shield bug, ''Elasmostethus interstinctus''.
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