Spiders are a distinct group of arthropods that includes house spiders, jumping spiders, wolf spiders, crab spiders, orb web spiders and money spiders.
Spiders are easily identified as they have 8 legs, 2 main body parts and no antennae. All are predators of other invertebrates which are either caught in silk webs or ambushed.
Most people are familiar with the larger species of spider. During the breeding season, which for many species is in the autumn, male spiders wander in search of a mate. They become more conspicuous at these times and more likely to enter houses.
Almost all large or unfamiliar looking spiders found in our homes and gardens are common established UK species. There are occasional exceptions, so if in doubt, ask for a confirmed identification. No UK spiders are of significant medical concern.
Spiders are predators of other invertebrates and play an important role controlling some very prolific species.
Number of UK species: about 640
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