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Spider Photos - Segestria Florentina

Here's some photos sent in by viewers. Segestria florentina is the biggest European segestriid spider. Some common names are tube web spider or cellar spider, although neither are exclusive to this species. Females reach a body length of 22 mm, males up to 15 mm. This species is much darker than others of the same genus. While subadult spiders have a greyish opisthosoma with a marking similar to Segestria senoculata, adults are of a uniform black, sometimes with a green metallic shine, especially on the fangs, which reflect with a striking green. The sexes are similar. Adults occur from June to November. They spin a tubular web, often in cracks of buildings. Six or more silken lines radiate from it, and the spider waits in the entrance, touching the lines with the frontal six legs. Prey triggering these lines get caught, and the spider immediately retreats again to eat it in its retreat. They hunt nocturnal insects such as moths and cockroaches. Bees and wasps are always bitten at the head end, so the sting will face away from the spider. The eggs are deposited inside the tube web. Sometimes the female will die after the spiderlings have hatched, and they will eat their mother. The spider can be lured to the entrance by gently touching the triplines with a stick in the evening or at night. Originally a species of the Mediterranean region as far east as Georgia, it can now be found in several large British towns (for example Bristol), where they were probably introduced via seaports at least since 1845. It has been found in several places in Cornwall, Bristol, Gloucester, Dover and Sheffield, where it prefers south-facing walls.[6]. Specimens have been found in Exeter Cathedral as far back as 1890.[7][8] It has also been found in Argentina, Australia and several Atlantic islands, where it was probably also introduced.Its bite is reportedly quite painful.[1] It has been compared to a "deep injection", and the pain can last for several hours. Two neurotoxins and one insecticide were found in the venom. The venom reduces the rate and amount of sodium inactivation. This effect is probably responsible for the prolongation of the action potential. Wikipedia

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SEGESTRIA FLORENTINA

5 September, 2016:
Hi I'm in the uk and wondered if you recognised the attached spider? We found 3 in our house last night, their leg span was 50mm with a 15-20mm long body

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13 May, 2015:
Hi I've just stumbled across this monstrosity of a spider compared to the usual ones found around our house and garden. It's head and body are about 1 inch long and 5/7mm wide. When walking it's legal spread to about 2 inches. It has Legs hairy and has hair 'fangs' too. Could it be a False widow spider? Please can you help. Kind regards Patrick

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28 October, 2014:
Hi - I found your website on the internet. Can you let me know if you know what this spider is? I am based in London, UK. Honor

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1 October, 2013:
Hi I would really like yo know what kind of spider this is please as I have never seen one before. It was found on a pub roof In south Yorkshire UK

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15 November, 2012:
These are the pictures we took of our S. Florentina's egg sac and hatchlings.

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26 June, 2012:
Segestria Florentina
Nik

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7 May, 2012
These photos were sent in by Matt in Cyprus.

 

 

   
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