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Walnut Orbweaver (Nuctenea umbratica)

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description Walnut Orbweaver (Nuctenea umbratica) Overview

Nuctenea umbratica, called the walnut orbweaver, is a European orb-weaving spider with a distinctly flattened body. That shape allows it to fit into narrow spaces under loose bark and in similar crevices, where it can remain concealed when inactive. It belongs to the true orb-weaver group and is associated with bark-dwelling spider fauna, making it a recognizable species on trees and other sheltered surfaces.

help Walnut Orbweaver (Nuctenea umbratica) FAQ

What is the walnut orbweaver?

The walnut orbweaver is Nuctenea umbratica, a European orb-weaving spider. It has a notably flattened body and belongs to the true orb-weaver group.

Why is Nuctenea umbratica so flat?

Its flattened shape lets it fit into narrow spaces under loose bark and in similar crevices. It can remain hidden there when it is inactive during the day.

Does the walnut orbweaver make an orb web?

Yes. It is an orb-weaving spider, although it may spend inactive periods concealed in a bark crevice beside its web.

Where does the walnut orbweaver live?

Nuctenea umbratica is associated with Europe and uses habitats containing trees, bark, and sheltered cracks. Loose bark provides a particularly useful daytime refuge.

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