If you’ve spotted a small, jerky-moving spider on your wall and want to know what it is, chances are it’s a jumping spider. The UK is home to around 40 species, and the one you’re most likely to see is the zebra jumping spider, a tiny black and white striped spider that’s completely harmless to humans and common on sunlit walls, fences and windowsills across England, Wales and Scotland.
This guide covers how to identify a jumping spider, whether they’re dangerous, where you’ll find them, and what’s involved if you want to keep one as a pet, including exotic species that aren’t native to the UK.
What is a jumping spider?
Jumping spiders belong to the family Salticidae, and they’re immediately recognisable once you know what to look for. Unlike most UK spiders, they don’t spin webs to catch prey. Instead, they stalk and pounce, using excellent eyesight and short, powerful legs to leap onto insects, sometimes covering distances many times their own body length.
Physically, they have a compact, square-fronted body shape and eight eyes arranged in three rows, with two large forward-facing eyes that give them the alert, almost curious look people often comment on. Their movement is distinctive too: rather than scuttling, they move in short, deliberate hops, pausing between each one as though assessing the situation.
Common jumping spider species in the UK
The zebra jumping spider (Salticus scenicus) is the one you’re most likely to encounter. It measures 5 to 7mm as an adult, with females slightly larger than males, and has bold black and white stripes across its abdomen, according to the Woodland Trust. Despite its small size, it can leap up to 10cm and take down prey several times its own size.
You’ll usually spot it on sun-warmed brick walls, fences and tree trunks, inching towards prey before pouncing rather than rushing at it. It’s active during the day, which makes it one of the easier UK spiders to actually watch in action.
Beyond the zebra jumping spider, other UK native genera include Evarcha, Euophrys and Heliophanus, which tend to be darker or metallic-looking but share the same compact body shape and harmless nature. With around 40 documented UK species in total, most are small, unobtrusive, and easily mistaken for one another without close inspection.
Is a jumping spider dangerous?
No. Jumping spiders are non-venomous to humans and pose no meaningful risk, and this holds true across every UK species. They rarely bite people at all, and on the rare occasion one does, the effect is typically no worse than a mild, brief irritation, similar to a small nettle sting at most.
It’s worth putting that in context: no native UK spider has caused a confirmed human death, and even the UK’s most-discussed species, the false widow, generally produces only local pain and swelling rather than anything more serious, according to pest control industry sources. Jumping spiders sit at the harmless end of that spectrum, and they’re arguably beneficial in gardens and homes since they help control small insects.
Where you’ll find jumping spiders in the UK
Outdoors, look for them on sun-facing walls, fences, tree bark, and among low vegetation in gardens, parks and woodland edges. They’re most active on warm, bright days, since they rely on good light for hunting.
Indoors, jumping spiders sometimes turn up on windowsills or walls, particularly in rooms that get direct sun. If you’ve searched for a small spider in the house that moves in short hops rather than scuttling, a jumping spider is a strong candidate, and there’s no need to treat it as a pest problem, since it’s not going to cause any harm and may well be eating other small insects in your home.
Identifying a jumping spider: quick checklist
A few features reliably separate jumping spiders from other small UK house and garden spiders:
- Body shape: compact and robust, with the front section (cephalothorax) broader than the abdomen
- Eyes: eight eyes in three rows, with two large, forward-facing eyes that are easy to spot even with the naked eye
- Movement: short, jerky hops rather than continuous scuttling or web-based ambush
- No web for hunting: you won’t find a jumping spider sitting in the middle of a web waiting for prey, since they hunt actively instead
If you want a firmer identification, macro photos of the eye pattern and colouring, checked against the British Arachnological Society’s field guide or an app like iNaturalist, will get you further than a general description alone.
Keeping a jumping spider as a pet
This is where “jumping spider” searches split into a genuinely different topic, since a growing number of UK keepers now keep them deliberately as pets rather than just spotting them outdoors.
Native versus exotic species
You can technically collect a native UK jumping spider like the zebra jumping spider from the wild, though most specialist keepers discourage taking adults and suggest only collecting spiderlings, then releasing adults back where you found them, to avoid pressure on wild populations. In practice, most UK keepers instead buy exotic pet species, with Phidippus regius (the regal jumping spider) being one of the most popular choices due to its size, colour and relatively easygoing temperament.
What it costs
Exotic jumping spiders from UK specialist retailers typically run from around £15 to £40 depending on species and age, based on current UK invertebrate retailer listings. You’ll also need basic housing (a small, ventilated enclosure), suitable substrate, and a means of misting for humidity, so budget beyond just the spider itself.
Where to buy
Reputable options include specialist invertebrate retailers, stalls at British Tarantula Society events and similar invert expos, and vetted sellers in dedicated online groups. If buying from a marketplace listing or social media group, check seller feedback carefully, since husbandry standards vary a lot between individual sellers.
Prices and stock change often across UK invertebrate retailers, so treat any figure here as a rough guide and check current listings before committing to a purchase.
FAQs
Are jumping spiders dangerous to humans in the UK?
No. UK jumping spiders are non-venomous and essentially harmless, rarely biting, and any bite that does occur causes only minor, short-lived irritation at most.
What does a UK jumping spider look like?
Most commonly, it’s the zebra jumping spider: a tiny (5 to 7mm) black and white striped spider with a compact body, large forward-facing eyes, and a distinctive jerky, hopping movement rather than web-spinning behaviour.
Can jumping spiders be kept as pets in the UK?
Yes. Many keepers legally keep both native species collected as spiderlings and exotic species such as Phidippus regius, typically bought from specialist UK invertebrate retailers for £15 to £40.
How do I identify a jumping spider?
Look for a square-fronted, compact body, eight eyes arranged in three rows with two large central eyes, and short hopping movements rather than continuous scuttling or sitting in a web.
Do jumping spiders bite?
They can, but bites are rare since they’re not aggressive towards humans, and any bite typically causes only mild, brief discomfort rather than anything requiring medical treatment.
Where do jumping spiders live in the UK?
Mainly on sun-facing walls, fences, tree bark and garden vegetation outdoors, and occasionally on sunny windowsills or walls indoors, since they rely on good light to hunt.
How many jumping spider species are there in the UK?
Around 40 species have been documented in the UK, though most people only ever notice the zebra jumping spider, which is by far the most common and recognisable.
What’s the difference between a jumping spider and a house spider?
Jumping spiders are small, compact, and hunt by pouncing rather than building webs, while common house spiders are typically larger, longer-legged, and either build webs or wander in search of mates rather than actively stalking prey.
