Females grow up to 6 mm. They lack venom glands, and are therefore non-venomous. A stabilimentum is sometimes present. Pattern and coloration is quite variable. In contrast to Uloborus walckenaerius, it has distinct tufts of hairs on the front legs. They are well-camouflaged as they hang upside down motionlessly in their horizontal webs. Young spiders look like dead insects and are thus hard to find on a web. The empty egg sac can often be seen attached to house plants. It is flattish, papery and brown and about 0.5 cm long, with the shape of a dried holly leaf.
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