The Find-a-Spider Guide

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Plebs eburnus

Fact Box
Plebs eburnus
(The source of this identification is the Joseph and Framenau reference shown below)
(formerly Araneus eburnus)
formerly Argiopidae
Body length:
female: 7 mm
male: about 6 mm
This spider typically builds a small orb web between branches of small shrubs; unlike the larger Eriophora species it remains in the web during the daylight hours rather than moving into a retreat after sunrise
The venom of this species seems to be harmless to humans
Plebs eburnus
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In its web
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With egg sac
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Other females
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Female underside
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The male

The current name of this spider is as shown in the paper: Joseph M.M. and Framenau V.W. (2012) Zoological Journal of the Linnean Society 160 279-341.

The adult female varies greatly in markings and colours but there will often be two black 'shoulders' at the front of the abdomen and some paired white marks behind this. There may also be some yellow or blue areas on the dorsal abdomen, the latter, when present, tending to cover almost the entire surface. And on many specimens a pair of lateral 'swirl' lines like those on Neoscona theisi will be found.

Note that the web built by this spider typically has a stabilimentum stripe (a zigzag band of white silk) diagonally across its centre. This is also seen on the webs of other Plebs species and some other araneid spiders, and particularly Argiope species and on Gea theridioides.

Known Range: This spider is very common from Cairns down to Melbourne, Adelaide and Tasmania.

Spider(s) with a very similar appearance: Other Plebs species and at least some other araneid species.

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Email Ron Atkinson for more information.    Last updated 4 January 2022.