First recorded

In a location that you monitor regularly (at least once a week), record the first time you see a live, active orange tip outdoors.

Overwinters as pupae and are first seen on the wing in April and May.

There is one brood. As there is no second generation it is less likely to cause confusion.

Available historic data: we have very good data from 1891-1956 (5308 records) and good data from 1970-1999