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Spider season: top ten most commonly encountered in your house

Posted: Monday 10th September 2018 by Ulster Wildlife Blogger

Giant house spider (c) Tone KillickGiant house spider (c) Tone Killick

Is your house being invaded by hairy lovesick Romeos seeking out their Juliets? Spider season is well and truly upon us with spiders seeking the shelter and warmth of indoors.

The onset of the breeding season sees an influx of large house spiders scouring your home looking for a mate, with females seeking shelter to lay their eggs - hence why your home is the perfect place. 

Don't worry: they are not dangerous and actually do us a favour by keeping household pests and bugs under control.

If you do find a spider in your house, don’t panic and don’t kill it unless you prefer pesky flies of course! Simply put a glass over it and slide a piece of paper beneath it and take it outside. Remember, spiders are harmless and beneficial to the environment, so please treat them humanely. You may never learn to love spiders, but you should definitely learn to live with them.

Adam Mantell, our resident spider expert, highlights 10 of the most common spiders you're likely to find around the house this autumn.

• House Spiders (Tegenaria species) - Common in and around houses. Very obvious at the moment as they are coming indoors to escape the weather and the males are on the hunt for mates.









Cellar Spider (Pholcus phalangioides)- which can be seen in houses, sheds, garages etc. When disturbed they gyrate in the web to confuse predators. Despite their diminutive size, this species often hunts and kills much bigger spiders like House Spiders.







Lace web Weavers (Amaurobius similis) -These are common around houses, walls and outbuildings where they find a small crack or hole in the masonry and create a very distinctive scruffy web. The web isn’t sticky but strands are twisted and tangled to snare prey long enough for the spider to pounce.

False Widows. - There are a few species of False Widows common in and around houses in Ireland. Contrary to scaremongering media reports these large spiders are slow moving, nocturnal and their bite is no worse than a wasp sting. They can be found in dark, cool places like undisturbed corners of garages and underneath kitchen units where they are not disturbed.


Woodlouse spider (Dysdera sp)- this large spider has impressive fangs designed for dealing with the armour plating on woodlice. The best place to look for these is underneath rotting wood, stones etc where there are large numbers of woodlice.


Snake spider (Segestria senoculata)- so-called because of the diamond shaped pattern along its back. This species lives underneath loose stones and in holes in rotting wood. Its very simple web is a star-shaped pattern of tripwires radiating from its retreat. When an invertebrate walks over the tripwires the spider detects the vibration and emerges to seize the prey.

Missing sector orb weaver (Zygiella x-notata) - This spider makes its home around the edges of windows on virtually every building. It may be most easily spotted by looking for the distinctive yellow silk egg sacs and an orb web with the uppermost sector missing.

The garden spider (Araneus diadematus)- is very obvious in gardens at this time of year, as the females are mature and full of eggs ready to be laid before the winter. It is easy to find by looking for the large orb webs in shrubs and bushes where the spider sits in the middle awaiting prey.

Zebra spider (Salticus scenicus)- this little spider loves running over hot brick walls on warm sunny days. It doesn’t use a web for catching prey but is very fast and can jump up to 10cm to catch insects. This spider has a curious habit of turning to look directly at your face if you get close to it.








Have you heard about our #spiderselfie challenge? 

Help us get the message out that spiders are our friends. Simply take a selfie with a spider (without disturbing it) and copy and paste the text below into Facebook, Twitter or Instagram with your pic and nominees:

"Do you dare? It’s #spiderselfie challenge time! Post a pic with your eight-legged friend  (as close as you dare without disturbing them) and make a donation to our local wildlife charity, Ulster Wildlife. Text ULST18 £1 to 70070 to help us get the message out that spiders are our friends! I've done it and I'm nominating......"


Photo credits: House spider (c) Dr Malcolm Storey, Cellar Spider (c) Sven Siegmund, Zebra spider (c), Noble False Widow (c) Joaquim Alves Gaspar, Garden spider (c) Chris Maguire, Lace Webbed spider (c) David Featherston, Snake spider (c) Magnefl, Missing sector orb weaver (c) Fritz Geller Grimm, Woodlouse spider (c) Hans Hillewaert, Cupboard spider (c) Stu's Images


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