2010 Annual Butterflies, Dragonflies and Damselflies Report

Monitoring in 2010 saw numerous species added to 2009’s initial list.

(Keith Powrie, an expert in lepidopterology and odonatology, has undertaken regular surveys of Knoll Gardens on behalf of the Foundation since 2009.)


500 butterflies were counted, representing 21 species. Of these the most numerous were:

Meadow Brown – 71
Green-veined White – 62
Holly Blue – 62
The Holly Blue count was the highest recorded at all Dorset sites, encouraged by the warm spring and numerous holly trees and ivy in the gardens.
Surprise visitor? Purple Hairstreak – an uncommon butterfly that favours oak woodland.

Damselflies and dragonflies

1500 damselflies and dragonflies were recorded representing 16 species, (5 damselflies, 11 dragonflies). Of these the most numerous were:

Azure Damselfly – 1245
Common Darter Dragonfly – 46
Surprise visitor? Golden-ringed Dragonfly – a riverine species normally seen patrolling streams and rivers.


The full detailed 2010 Report is available here