Confirmation : Woodlouse Spider

Andrew C · #1 (**permalink**) 28-02-2011, 08:16 PM

Evening,

This was photographed in the house this morning and I think it fits the bill perfectly for Woodlouse Spider (Dysdera crocata) but wanted to ask if there are any similar species to consider first before writing it down in waterproof ink!

Regards,
Andrew.

wyevilla · #2 (**permalink**) 28-02-2011, 08:26 PM

I'm sure you're right - The Woodlouse Spider (Dysdera crocata).

I believe there is a much rarer species of Dysdera but I have no idea about its distribution.

Anyone?

No.9 Spider · #3 (**permalink**) 01-03-2011, 06:12 PM

Dysdera erythrina is the other species, distribution as below. The species could be more widespread than indicated as many would assume a Dysdera species to be D. crocata and may not have examined the specimens closely in the past.

The Updated Distribution Maps - British Arachnological Society

Andrew C · #4 (**permalink**) 02-03-2011, 11:02 AM

Thanks. I believe this is more likely to be D. crocata based on habitat after following your link and then on to this page.... http://wiki.britishspiders.org.uk/im..._erythrina.pdf

"D. crocata is often found in synanthropic situations in gardens, post-industrial situations and various kinds of wasteground, as well as in shingle or stony habitats. Reliably identified D. erythrina suggest that it is a species much more restricted in habitat preferences, and is most likely to occur on heathland, old undisturbed coastal shingle and old grasslands."

The distribution for D. erythrina in the southwest appears to be more coastal which fits the habitat description above with a prominence of heathlands, etc.

This is handy as it will now give me another species to look for on the coasts with the foresight to examine them more closely.

Regards,
Andrew.