Forum

Welcome to our general Forum page.  Please feel free to post a comment on any issue or topic area. If you upload a picture, it will be available for you to insert here with your post. IF YOU WANT HELP WITH IDENTIFICATION, PLEASE PROVIDE A FULL POSTCODE OR GRID REFERENCE AND DATE of the record in your post so that it can be added to the recording scheme. You can send a message or ask a question about British spider identification here. If your query is about spiders from other parts of the World, please find another forum. We are unable to help. You will need to register and be logged-on to post to the forum. Find out more and Help adding forum posts. You will find some helper toolbar buttons in the add post and post editor, as well as your most recently uploaded pictures as toolbar buttons. Click on the toolbar picture to add it to your post.

Mon 8th October 2012 20:33 by Peter Harvey
re: Help identifying lycosidae
An accurate ID of the individual requires (1) adults and (2) microscopical or very clear lens examination of palp/epigyne. From the legs I would think your photographs are pretty certain to be of a juvenile Alopecosa, but almost certainly barbipes which can be numerous in suitable habitat on southern heathlands, as well as chalk grassland and lichen heath habitats on other dry grasslands. Adult female Alopecosa barbipes can also be pretty large, so even large size can't be taken to be more than an indication between barbipes and fabrilis. However a good quality lens and examination of palp or epigyne would probably enable an adult male or female to be distinguished from A. barbipes when confined to a tube (but the epigyne will be very obscured by hairs, so even this would not be easy) ) and the adult males of A. fabrilis would not have the brush of long black hairs on tibiae and metatarsi 1.

I would be interested in the record of Alopecosa fabrilis on one of your sites a few years back and which site, since the last record we have in the recording scheme is from Hankley Common in 1990, the only modern site and with Bloxworth and Morden Heaths the only other sites - but bearing in mind that the spider can easily be confused with A. barbipes if field identification is being relied on, especially by someone not very familiar with both species and the range of size, pattern and colour of both juveniles and adults (and I don't know of anyone alive in this country who would be!). Locket & Millidge in British Spiders state that A. fabrilis is generally darker than A. barbipes, especially on the ventral side of the abdomen, but this will almost certainly apply to adults and not necessarily juveniles, and these things are not going to be definitive on their own without a voucher specimen. Internet images certainly suggest that adult fabrilis in Sweden have black underside. Crooksbury Common appears quite close to Hankley Common, so it would be very good if you were able to find an adult for critical examination.

link


Archives: 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