Colonies expand for the treetop emperor
by Patrick Barkham from on (#2YA9Q)
Dedicated searches have revealed a rare butterfly back in its former Kent stronghold and gaining other territories
Britain's most charismatic and elusive butterfly, the purple emperor, has a habit of turning up unannounced. This powerful, treetop, butterfly lives at low densities in the landscape but has been spotted in many new places thanks to the combination of a fine mid-summer and some astonishingly thorough searches by devotees.
Related: Interesting times for lepidopterists
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