A. Roberts drawing of erraticum shows a distinct ventral projection at the tip of the tarsus, which this specimen doesn't appear to show.
B. The drawing for virescens shows a tear-dropped shape at the end of the bulb, which this specimen shows and which appears to be absent from the drawing of erraticum.
C. Roberts drawings show a smooth curve for the proximal spur projection of erraticum but a less smooth curve for virescens, as per this specimen.
D. There is a slight fork at the apex of the projection at D, better fitting virescens.
E. Although the hairs at E are rather tangled and stuck together they appear robust, again better fitting virescens.
F. The longest hairs at F appear longer than the width of the patella, favouring virescens?
Hope this helps.
I will take another look there when i get a moment and see if i can find one.
If you revisit the site and can collect an adult spider and send to me (alive) in a small plastic container with a little dampened tissue inside (cave spiders need humid conditions) inside a padded envelope I can determine which species. Peter Harvey, 32 Lodge Lane, Grays, Essex RM16 2YP (National Organiser, Spider Recording Scheme).
I wouldn't be surprised if i get no ID agreements/other suggestions or comments for my post here:
So i wondered if anyone here would mind giving their thoughts on this beautiful spider please?
Also, if this is indeed Meta, (and in case i see this spider again), how are the 2 similar species separated in the field? I normally carry a hand lens.
I can supply a 10 fig grid ref for this observation if requested. All the other details that i have or know of the sighting are included in the above post (should you want take this as a record).
I see there aren't many records for either species but can easily revisit this site for another look/better photos sometime, as it's not far from me.
Ben Area Co-ordinator Stroud and Gloucester, Gloucestershire Amphibian and Reptile Group (Glos ARG) Member, Cotswold Fungus Group and Field Ecologist
Archives: Mar 2020 Feb 2020 Jan 2020 Dec 2019 Nov 2019 Oct 2019 Sep 2019 Aug 2019 Jul 2019 Jun 2019 May 2019 Apr 2019 Mar 2019 Feb 2019 Jan 2019 Dec 2018 Nov 2018 Oct 2018 Sep 2018 Aug 2018 Jul 2018 Jun 2018 May 2018 Apr 2018 Mar 2018 Feb 2018 Jan 2018 Nov 2017 Oct 2017 Sep 2017 Aug 2017 Jul 2017 Jun 2017 May 2017 Apr 2017 Mar 2017 Feb 2017 Dec 2016 Oct 2016 Sep 2016 Aug 2016 Jul 2016 Jun 2016 May 2016 Apr 2016 Mar 2016 Feb 2016 Jan 2016 Dec 2015 Nov 2015 Oct 2015 Sep 2015 Aug 2015 Jul 2015 Jun 2015 May 2015 Apr 2015 Mar 2015 Feb 2015 Dec 2014 Nov 2014 Oct 2014 Sep 2014 Aug 2014 Jul 2014 Jun 2014 May 2014 Apr 2014 Mar 2014 Feb 2014 Jan 2014 Dec 2013 Nov 2013 Oct 2013 Sep 2013 Aug 2013 Jul 2013 Jun 2013 May 2013 Apr 2013 Feb 2013 Jan 2013 Dec 2012 Nov 2012 Oct 2012 Sep 2012 Aug 2012 Jul 2012 Jun 2012 May 2012 Feb 2012 Jan 2012 Dec 2011 Nov 2011 Oct 2011 Aug 2011 May 2011 Mar 2011 Dec 2010 Nov 2010 Sep 2010 latest posts