当它于2006年在英国首次被发现时，似乎只限于英格兰东南部地区，但现在已经进一步向北部和西部蔓延。
When it was first found in the UK in 2006 it seemed to be confined to south-east England, but has now spread further north and west.
当它于2006年在英国首次被发现时，似乎只限于英格兰东南部地区，但现在已经进一步向北部和西部蔓延。
When it was first found in the UK in 2006 it seemed to be confined to south-east England, but has now spread further north and west.
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