Scientific name: Pholcus phalangioides
You've probably spotted this long-legged spider hiding in the corner of a house or building.
StatisticsBody length: 7-10mm
When to seeAll year round.
AboutThe cellar spider, also known as the daddy long-legs spider, is almost only ever found indoors, where they benefit from a warm, stable temperature. Cellar spiders spin loose, messy webs in the corners of rooms, usually where the wall meets the ceiling. They feed on any insects they can find within a home, but will also hunt other spiders - including surprisingly large house spiders!
Cellar spiders often hang upside down from their webs, but different spiders have different approaches to danger. If they're disturbed, some cellar spiders will bounce and vibrate rapidly in their web to try and frighten away the threat, whilst others will curl up and try to look as inconspicuous as possible.
They have very long legs but a tiny body, which is where the alternative name of daddy long-legs spider comes from. This often leads to confusion with craneflies and harvestment, both of which are also sometimes known as daddy long-legs.