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Nuctenea umbratica (Walnut Orb Weaver)

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description Nuctenea umbratica (Walnut Orb Weaver) Overview

Nuctenea umbratica, commonly known as the walnut orb weaver, is a species of spider belonging to the family Araneidae. Originally described in 1757, this arachnid is native to Europe and parts of North Africa. It is physically distinguished by its exceptionally flattened body and dark, walnut-like abdominal markings, which provide effective camouflage against tree bark. The species is nocturnal, typically hiding in crevices or under loose bark during the day.

help Nuctenea umbratica (Walnut Orb Weaver) FAQ

Where does the Walnut Orb Weaver spider hide during the day?

The Nuctenea umbratica is a nocturnal spider that typically hides in dark crevices, under tree bark, or near fences during the day. Its exceptionally flattened body allows it to squeeze into very tight spaces to avoid predators.

How do you identify a Walnut Orb Weaver?

This European spider is distinguished by its dark, walnut-like abdominal markings, which provide excellent camouflage against tree bark. It was first officially described by the scientist Carl Alexander Clerck in 1757.

Is the bite of a Walnut Orb Weaver dangerous to humans?

While they are capable of biting if heavily provoked, their venom is not medically dangerous to humans. The pain from a bite is generally comparable to a wasp sting, and the spider prefers to retreat rather than attack.

When is the best time to see a Nuctenea umbratica?

Because they are nocturnal, the best time to observe them is at night when they emerge to rebuild their large orb webs. Adult spiders are most commonly spotted in the late summer and autumn months.

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