Mapping Challenge 2005 - 2009 ~ TQ17

Butterfly Conservation
Hertfordshire and Middlesex Decad (10km square) Mapping Progress 2005 - 2008

TQ17

Click on image for detailed map

TQ17~ Click on image for detailed map

Decad co-ordinator: VACANT

Link sections on this page . . .
Table One ~ Key Tetrads to be visited
Table Two ~ Species richness map
Table Three ~ Target species

Table One ~ Key tetrads to be visited
Table One lists tetrads that have either had no visits or where coverage is poor. Please try to visit these in 2008 as coverage is very poor! If you can help please contact or

Several 2km squares are in or shared with the Surrey Branch. Please send all Surrey records to
the Surrey and SW London Branch

Tetrad (2km square) Centered on Coverage 2005 - 2007
TQ1070 north of Kempton Park All season visits required - high priority square
TQ1072 Feltham All season visits required
TQ1074 North Feltham all season visits required
TQ1078 Bull's Bridge/A312 All season visits required
TQ1270 Hampton all season visits required - high priority square
TQ1272 west of Twickenham all season visits required - high priority square
TQ1274 Hounslow Heath no records - all season visits required
TQ1276 Heston no records - all season visits required - high priority square
TQ1278 North Hyde/Norwood Green all season visits required - high priority square
TQ1470 Bushy Park north all season visits required
TQ1472 Twickenham no records - all season visits required - high priority square
TQ1474 Twickenham no records - all season visits required - high priority square
TQ1476 Osterley/Osterley Park south no records - all season visits required - high priority square
TQ1478 Osterley Park north all season visits required
TQ1670 Teddington all season visits required - high priority square
TQ1672 Marble Hill no records - all season visits required - high priority square
TQ1674 Isleworth no records - all season visits required - high priority square
TQ1676 Syon House all season visits required - high priority square
TQ1678 Northfields/Lammas Park all season visits required - high priority square
TQ1870/2/4 All in Surrey
TQ1876 Kew Bridge - north of river only no records - all season visits required - high priority square
TQ1878 Gunnersbury Park all season visits required - high priority square

Table Two ~ Species Richness Grid
Table Two is a 5 x 5 grid of the tetrads (2km squares) in TQ17, and shows the species richness for each tetrad based on recording in 2005 and 2006.
A transect had been walked at Cranford Park for several years but was not walked in 2006 or 2007.

This list will be updated during 2008 to avoid duplication of effort. Please check before visiting a target
1 = a record
Special richness grid for TQ17

Table Three ~ Target Species
Table Three indicates the distribution of species recorded in TQ17 and the 2km squares that need to be visited for specific species.
This list will be updated during 2008 to avoid duplication of effort. Please check before visiting a target
1 = a record
1 = a species record
Species 1070 1072 1074 1076 1078 1270 1272 1274 1276 1278 1470 1472 1474 1476 1478 1670 1672 1674 1676 1678 1870 1872 1874 1876 1878 Total
Brimstone 1 1 1 1 4
Brown Argus 1 1
Clouded Yellow 0
Comma 1 1 2
Common Blue 1 1 1 1 4
Essex Skipper 1 1 2
Gatekeeper 1 1 1 1 4
Green-veined White 1 1 1 3
Holly Blue 1 1 1 1 1 5
Large Skipper 1 1
Large White 1 1 1 3
Marbled White 1 1
Meadow Brown 1 1 1 1 1 1 6
Orange Tip 1 1 1 3
Painted Lady 1 1 2
Peacock 1 1 1 1 1 5
Purple Emperor 0
Purple Hairstreak 1 1
Red Admiral 1 1 1 1 1 1 6
Ringlet 0
Silver-washed Fritillary 1 1
Small Copper 1 1 2
Small Heath 1 1 1 1 1 5
Small Skipper 1 1 1 1 4
Small White 1 1 1 3
Small Tortoiseshell 1 1 1 1 1 5
Small/Essex Skipper -
Speckled Wood 1 1 1 1 1 1 1 7
White Admiral 0
White-letter Hairstreak 0
Total 1 3 5 23 5 1 6 0 0 4 8 0 0 0 4 4 0 0 8 7 0 1
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