Argiope aetherea
Tropical St Andrew’s Cross Spider Identification Australia
Large colourful orb-weaver that sits in an X shape on a round web, especially in warm eastern Australian gardens and bushland.
First aid / what to do now
- Move away from the spider and avoid handling it.
- Wash the bite area with soap and water.
- Use a cold pack for pain or swelling.
- Call 13 11 26 or seek medical advice if symptoms are severe, spreading, infected-looking, allergic, or you are unsure what bit you.
This site cannot diagnose a bite. In an emergency call 000. For poisoning advice in Australia call 13 11 26.
How to identify the Tropical St Andrew’s cross spider
- Colourful Argiope orb-weaver with paired legs
- Often rests in an X shape in the centre of a round web
- White silk cross or zig-zag stabilimentum may be visible
- Commonly noticed in warm gardens, shrubs, bush edges and suburban backyards
Danger level
Usually low risk
What to check next
Check for the round orb web, paired-leg X posture and white silk cross. Compare with the broader St Andrew’s cross spider page, banded garden spiders and other patterned orb-weavers if the web decoration is missing.
When to seek medical help
This spider is not usually considered dangerous. Avoid handling it and seek medical advice for severe pain, allergic symptoms, infection signs, spreading symptoms or uncertainty after any bite.
Where the Tropical St Andrew’s cross spider is usually seen in Australia
Gardens, shrubs, open bushland edges, suburban backyards, parks and warm vegetated web sites from northern New South Wales through Queensland and other northern Australian habitats.
How it differs from lookalikes
These comparisons are clues, not a confirmed species ID. Use several features together: body shape, size, location, web type and behaviour.
- Dome tent-web spiderMay overlap because of same region, similar size, similar colour. For this spider, check: Check for the round orb web, paired-leg X posture and white silk cross. Compare with the broader St Andrew’s cross spider page, banded garden spiders and other patterned orb-weavers if the web decoration is missing. For the other possibility, check: Check the web shape first. A sturdy dome or tent web in warm Queensland, northern NSW, the NT or northern WA is a stronger clue than body colour alone.
- Painted cross spiderMay overlap because of same region, similar size, similar colour. For this spider, check: Check for the round orb web, paired-leg X posture and white silk cross. Compare with the broader St Andrew’s cross spider page, banded garden spiders and other patterned orb-weavers if the web decoration is missing. For the other possibility, check: Check the location and web first: painted cross spiders are most useful as a northern Queensland or tropical northern Australia comparison. Look for paired legs, bold yellow-white abdominal markings and a white silk stabilimentum. Compare with tropical St Andrew’s cross spiders, St Andrew’s cross spiders and banded garden spiders if the exact Argiope pattern is unclear.
- Banded garden spiderMay overlap because of same region, similar size, similar colour. For this spider, check: Check for the round orb web, paired-leg X posture and white silk cross. Compare with the broader St Andrew’s cross spider page, banded garden spiders and other patterned orb-weavers if the web decoration is missing. For the other possibility, check: Check for a neat orb web, banded abdomen and garden or grassland setting. Compare with St Andrew's cross spiders and other orb-weavers if the body markings are not clear.
Common comparisons
People often compare this spider with similar Australian spiders. These quick links help you check the closest alternatives.
Compare this spider by state
Use the state guides to compare this spider with other local possibilities.
Similar spiders to compare
Compare this spider with these likely lookalikes before settling on an identification.
Dome tent-web spiderUsually low risksame region, similar size, similar colour
Painted cross spiderUsually low risksame region, similar size, similar colour
Banded garden spiderUsually low risksame region, similar size, similar colour
Humped golden orb-weaving spiderUsually low risksame region, similar size, similar colourNext useful checks
Still trying to identify this spider?
Use these quick paths if the Tropical St Andrew’s cross spider is only one possible match. They help compare photo clues, local spider pages, bite guidance and similar Australian spiders.
Reference notes
How this guide stays cautious
Spider Identifier Australia uses visible clues to suggest likely possibilities. It is not a medical diagnosis or a formal species determination.
- Australian Museum spider informationAustralian spider identification, biology and dangerous spider context.
- Australian Museum funnel-web spidersFunnel-web range, identification and bite-safety context.
- Poisons Information CentreCall 13 11 26 for poisons advice from anywhere in Australia.
Common questions
Tropical St Andrew’s cross spider FAQ
Is the Tropical St Andrew’s cross spider dangerous?
Danger level: Usually low risk. This spider is not usually considered dangerous. Avoid handling it and seek medical advice for severe pain, allergic symptoms, infection signs, spreading symptoms or uncertainty after any bite.
How do I identify the Tropical St Andrew’s cross spider?
Check the visible body shape, size, colour, markings, location and web or hiding place. Key clues include: Colourful Argiope orb-weaver with paired legs; Often rests in an X shape in the centre of a round web; White silk cross or zig-zag stabilimentum may be visible; Commonly noticed in warm gardens, shrubs, bush edges and suburban backyards.
What should I do if I think I was bitten by a Tropical St Andrew’s cross spider?
Clean the area, use a cold pack for pain, and seek medical advice if pain is severe, symptoms spread, infection signs appear, or you are unsure what bit you.
Where is the Tropical St Andrew’s cross spider usually found?
Gardens, shrubs, open bushland edges, suburban backyards, parks and warm vegetated web sites from northern New South Wales through Queensland and other northern Australian habitats.
What spiders look similar to the Tropical St Andrew’s cross spider?
Common lookalikes can overlap in colour, size, web type or habitat. Use the similar spiders and common comparisons on this page to check alternatives before settling on a match.
Can I identify the Tropical St Andrew’s cross spider by photo?
A photo can help if it shows the whole spider, markings, size and where it was found. For the Tropical St Andrew’s cross spider, also compare the checklist clues and what to check next rather than relying on colour alone.