Friday, 4 February 2011

Green Hairstreak Species Report 2011

The green hairstreak butterfly is widely distributed throughout the UK and Ireland, however it is probably still under-recorded in Rother due to it being a quite difficult butterfly to spot, despite its relatively long flight season.
Credit: Ettore Balocchi
The data submitted to the Rother Woods Project is summarized in the table below.

Green Hairstreak Data Summary



2008
2009
2010
First sighting
13th May
7th May
17th April
Last sighting
24th May
6th June
17th June
No of days
11
31
62
No of individuals
2
5
18
No of sites
1
4
5
No of recorders
1
3
5

Green hairstreak were recorded in more westerly woodland sites in 2010 than 2009 but it is encouraging to note that the frequency of observation has increased as more butterflies were seen per recorder in 2010 than in 2009. As both green hairstreak eggs and larvae are more difficult to spot than the adults, only a more concerted search for the adults in the Rother area will result in more records being obtained.  

Credit: Paolo_Mazzei
However the general trend for increasing number of sites and records is very encouraging.

The green hairstreak is a resilient little butterfly and probably well distributed across the district. The key question for the future is whether this butterfly’s habitat is increasing or diminishing.

Susanne Whiting

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