There are 19 species of buttefly resident to Guernsey, there is also one species in Herm and two in Sark which are not in Guernsey as well as migrant species which arrive from time to time when weather conditions are suitable for them to cross the water, some of these migrants are seen annually, some much less often and occasionally breeding is noted.
The current Guernsey species list is as follows, migrant species noted:
I have added photographs below of the species I have seen (shown in bold above):
Clouded Yellow
Large White
Small White
Green-veined White
Green Hairstreak
Purple Hairstreak
Small Copper
Long-tailed Blue
Brown Argus
Common Blue
Holly Blue
Red Admiral
Painted Lady
Small Tortoiseshell
Large Tortoiseshell
Peacock
Comma
Glanville Fritilliary
Speckled Wood
Wall
Grayling
Gatekeeper
Meadow Brown
Small Heath