Argiope protensaCommon name: Long-tailed Argiope
Meaning of name: Unknown.
Distribution: Throughout Australia.
Remarks: This spider had a body length of approximately 20 millimetres. It was photographed in October and June.
Atlas of Living Australia https://bie.ala.org.au/species/https://biodiversity.org.au/afd/taxa/33013eb9-e3e1-4e2b-95a4-89d7505ad0a1#overview
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This is the underside of the spider.
The size of the abdomen on this individual suggests that this is a female ready to lay her eggs.