Sites for National Grid Square: SW

The map below shows sites for this grid square, each represented by a pin that, when clicked, will show the species at that site. The Grid References provided in the table below the map can be used on Ordnance Survey maps, or on a website such as This is currently more accurate than the Google Map rendering you see below (which is up to 200 metres out).

The Grid Square represented by this map is often divided into squares of 10 kilometres each, numbered 0 to 9 from the south west corner, in both an easterly and northerly direction. This allows a Grid Reference such as SU32 to be specified (where SU is the National Grid Square, 3 is the easting and 2 the northing). Further division gives a more detailed reference, such as SU317201 (where SU is the National Grid Square, 317 is the easting and 201 is the northing).


Distribution data (2000-2009) has been made available through the generosity of Butterfly Conservation. Any subspecies distribution is taken from the book British and Irish Butterflies, by Adrian Riley. Based on this data, the following species and subspecies may be found in this grid square:

Species selection:

In the table below, the icon links to a Google search based on the site name, and the and icons (where present) link, respectively, to Google Maps and Streetmap representations of the grid reference.

Site Name Grid Reference Species Subtaxon
Botallack SW36303370 Silver-studded Blue ssp. argus
Cudden Point SW555282 Dark Green Fritillary
Grayling ssp. semele
Silver-studded Blue ssp. argus
Godolphin Wood SW60203210 Purple Hairstreak
Gwennap Head SW36502180 Grayling ssp. semele
Gwithian Towans SW57904130 Silver-studded Blue ssp. argus
Kenneggy SW56742810 Marsh Fritillary
Pendeen SW37803550 Silver-studded Blue ssp. argus
Penhale Sands SW782567 Brown Argus
Dark Green Fritillary
Dingy Skipper ssp. tages
Green Hairstreak
Grizzled Skipper
Silver-studded Blue ssp. argus
Porthgwarra SW37102170 Small Pearl-bordered Fritillary
Riviere Towans SW55503800 Silver-studded Blue ssp. argus
Toads Hole SW964597 Dingy Skipper ssp. tages
Marsh Fritillary
Small Pearl-bordered Fritillary
Upton Towans Nature Reserve SW579398 Silver-studded Blue ssp. argus
Windmill Farm Nature Reserve SW693152 Marsh Fritillary