Family Segestriidae (Tubeweb spiders)
Body length up to 10 mm.
Also called the leopard spider, this spider has a distinctive row of black spots running down the centre of its back, some merging to form a band. The sexes are alike, although the male has a smaller and narrower abdomen. It has six closely grouped eyes.
It spins a tubular web in holes in walls and in decaying cavities of rotting wood. It predates on other insects at night, and spins silken trip wires to help snare them.
Seen all year round, but mainly May to November. Found under bark and stones, and holes in walls. Common and widespread throughout Britain. A native species.