1.5 to 2 mm, pinkish-orange spider. Characteristic way of slowly walking with its front legs out-stretched, interspersed with short bursts of running. Its small size and pinkish colour make it difficult to spot, particularly because it often nocturnal. 

Tibia I with 5 ventral spines (c.f. Oonops pulcher, 4 spines on Tibia I).

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

In warmer parts of Europe this spider lives under stones, amongst leaf-litter, etc. In the UK it is more or less completely synanthropic and only found in houses. During the day, it hides away in a silken cell behind furniture, curtains, pictures, papers, etc. Feeds on tiny prey such as mites and booklice.

Year round. 

Few records, probably under-recorded due to its small size and nocturnal habits.

Under recorded in Leicestershire and Rutland.

http://srs.britishspiders.org.uk/portal.php/p/Summary/s/Oonops+domesticus