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 will need to register and be logged-on to post to the forum. Find out more

Mon 29th July 2013 21:17 by Peter Harvey
The extra species at the end of Volume 2 of the hardback are as in the paperback edition. However there are additional species in the paperback, Harpactea rubicunda, Scotophaeus scutulatus, Heliophanus dampfi, Talavera (Euophyrs) thorelli, Steatoda nobilis, Minicia marginella and more figures for Philodromus albidus/rufus, praedatus/aureolus/longipalpis. New species since both publications are usually included in the Collins guide to NW Europe, but if not then for a few as papers published in the BAS bulletin and occasionally the BAS Newsletter. A very few species are not yet published in British literature, especially recently discovered ones.
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Mon 29th July 2013 21:00 by David Jewsbury
Which Edition of Roberts is best?
Does the paperback 2 volume edition of Roberts, Spiders of the Great Britain and Ireland have important updates not in the 3 volume 1987 hardback edition which I can get secondhand? I like the hardback version, but need to get what is most useful.

Thanks, David

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Sun 28th July 2013 12:14 by Jim Pewtress
Re-Epigyne cleaning
Many thanks Peter. Having tentatively identified Philodromus aureoles recently it looks as though I may need to have a closer look at my specimen and send to my county recorder for confirmation. Just looked in Locket & Millidge thanks.

Jim Pewtress

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Sun 28th July 2013 09:44 by Peter Harvey
Re: Epigyne cleaning
This is a difficult question to answer. Where the internal epigyne structure is obscured or difficult to see, and for example in Philodromus in the aureolus group, where the internal structure needs to be seen, it may be necessary to excise the epigyne and view the internal structure dorsally. A sharp scalpel or fine blade can cut the sides and the epigyne removed or turned over as a flap. Soft tissue may be removed by EXTREMELY CAUTIOUS use of household bleach on the epigyne, watched closely under the microscope, transferred to a tube and washed thoroughly with water as soon as the dark chitinous structure is adequately visible. Great care is needed not to overdo it, and of course the operation needs to be carried out without losing the epigyne (easiest if the epigyne edge is left still connected to the spider).  Locket & Millidge (British Spiders, Vol.1) explain how epigynes can be cleared by immersing the specimen in a fluid with a refractive index of 1.50-1.55, such as clove oil, when the chitinous integument becomes more or less transparent. I personally have no experience of this.
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Thu 25th July 2013 19:55 by Jim Pewtress
Epigyne cleaning
I have noticed in some of the foreign ID guides and web site pages that there is often a diagram of the cleaned epigyne especially for similar species. Is this an easy thing to do and are there any instructions on how to go about it? Is it worth it?

Jim Pewtress

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Thu 18th July 2013 22:16 by Peter Harvey
Segestria florentina
Dear Adam, can you upload a photograph of your spider? It is certainly possible for the spider to overwinter.
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Wed 17th July 2013 14:24 by Adam Tickner
Adding a location entry for a Segestria Florentina
EDIT: I think I've uploaded an image, it's kind of hard to tell... but it seems to have appeared.

Possible Segestria Florentina Copyright: Adam Tickner

Hello there, I've just signed up with the intention of adding a sighting record for a Segestria Florentina that lives outside our back door (KT2 6DA). I'm certain it's one of those, green chelicerae etc. Interestingly, I'm also fairly certain that it has managed to over winter in that location - it's in the same place as one we found last year, and also appears to be pretty much the maximum size. Is that possible? There are others nearby that would seem to be this year's generation judging by their size.

In addition we've had males in our house a few times, the last in May.

Can I add a sighting record?

Thanks Adam

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