Argiope picta
Painted Cross Spider Identification in Australia
Colourful northern Australian orb-weaver with paired legs, yellow-white abdominal patterning and a white silk stabilimentum in the web.
Usually low riskAbout the Painted cross spider
Painted cross spiders are northern Australian Argiope orb-weavers, especially useful to compare with St Andrew’s cross spider sightings from Queensland. Females are much more obvious than males, with a silvery carapace, strong yellow, white, black and brown abdominal patterning, paired-leg posture and a round orb web that may carry a vertical or cross-like white silk stabilimentum.
Exact-species specimen views
These licensed exact-taxon photographs show useful anatomy and variation. Use each caption for record and image context; no single image set represents every colour, posture or habitat.
How to identify the Painted cross spider
The accepted name is Argiope picta L. Koch, 1871, an Araneidae orb-weaver recorded by the World Spider Catalog from Indonesia, including the Moluccas, to Australia. In a useful adult view, the female has a silvery front body, a bold yellow, white, black and brown abdomen, paired legs held together and a round orb web. White zig-zag silk, a vertical band or a cross-like stabilimentum may run through the web, but the decoration can be incomplete, altered or absent from a cropped photograph. Northern Queensland and tropical northern Australia are strong search contexts, not automatic proof of the species. Argiope identification is safest when the whole spider, web architecture, adult pattern and locality agree. A web-only image, juvenile, tiny male or distant flash photograph should remain a cautious Argiope-level result unless the species characters are actually visible.
Clues that are not enough on their own
- A white cross or zig-zag silk alone
- Any colourful spider sitting in an orb web
- Paired legs without a clear whole-web view
- Yellow, white or black abdominal bands photographed under flash
- A tropical Queensland location treated as automatic proof
- A 5c-to-20c body estimate from perspective-distorted legs
- A tiny male beside the web assumed to identify the female
- A juvenile pattern treated as the adult species pattern
- An old Argiope or St Andrew’s cross common name treated as a current species name
Colour, sex and life-stage variation
Females are the conspicuous web builders; males are much smaller and can be missed beside the hub or frame threads. Abdominal colours and the apparent width of the bands change with maturity, moult, lighting and whether the spider is viewed from above or below. Juveniles may have a different pattern and can build a spiral or less cross-like stabilimentum before the adult appearance develops. The paired-leg posture is useful across Argiope but is not unique to A. picta, and a white web decoration is a silk structure rather than a fixed species mark. Treat the local 5c-to-20c field label as a rough visual aid, not a measurement or diagnosis.
Behaviour, web and retreat
The female builds a round orb web among shrubs, grasses, garden plants, rainforest edges and open forest vegetation. She often rests near the hub with legs paired, while stabilimentum silk may form a vertical strip, partial cross or other dense white section. The web intercepts flying insects; the spider may wrap prey at the hub and can leave or rebuild after disturbance. Stabilimentum function is not a simple identification test and should not be interpreted as a guaranteed warning, camouflage or ultraviolet signal. Photograph the web in place rather than touching it, and do not pull the spider from the hub to inspect the underside.
Australian distribution
The World Spider Catalog gives Argiope picta a broad Indonesia-to-Australia range. For this Australian profile, keep Queensland and the Northern Territory as conservative search filters, with the strongest practical clue being tropical or northern habitat rather than a generic eastern-Australian garden. Argiope species overlap in Queensland, and older records or common names may blur A. picta with A. aetherea, A. keyserlingi, A. radon or other cross spiders. A state record is only context: retain the locality, habitat, web height and season and seek a specialist review when the abdominal pattern is not clear.
What to do if you find one
Leave the orb web intact and photograph from the path or garden edge. Record the whole web, the stabilimentum, support plant, broad locality and a natural scale reference; never put a hand, ruler or phone against the silk. Keep children and pets away from low webs and do not handle the female, egg sac or nearby tiny male. This spider is generally considered low risk. For a suspected bite, wash the area and seek medical advice for severe or spreading symptoms, allergic features, infection signs or uncertainty; call 13 11 26 for poisons advice and 000 for collapse or breathing difficulty.
Compare with similar spiders
Use body shape, web or retreat, location and behaviour together before settling on a likely match.
- St Andrew's cross spider — St Andrew’s cross spider (Argiope keyserlingi): eastern Australian overlap is substantial; compare the adult abdominal pattern, locality and stabilimentum without treating a cross shape as exclusive.
- Tropical St Andrew's cross spider — Tropical St Andrew’s cross spider (Argiope aetherea): northern habitats and bold Argiope markings overlap; species-level confidence needs pattern and locality agreement.
- Banded garden spider — Banded garden spider (Argiope trifasciata): a patterned abdomen and orb web can look similar, but current range and band arrangement must be checked rather than assumed from a name.
- Knobbled garden orb weaver — Knobbled garden orb-weaver (Hortophora transmarina): a large garden orb web may be nearby, but body outline, stabilimentum and paired-leg posture point to different identification paths.
Sources for this profile
These accessible authoritative sources support the identification and bite-safety context on this page.
- World Spider Catalog: Argiope picta
- World Spider Catalog: Argiope catalogue
- Australian Faunal Directory: Argiope picta
- Australian Museum: St Andrew's Cross Spider comparison
- Australian Museum: census of Australian Araneidae
- ClimateWatch: Australian cross-spider field guide
- Bishop Museum: Argiope picta record
- Wikimedia Commons: exact Argiope picta photograph
- Wikimedia Commons: exact Argiope picta Cairns photograph
- Wikimedia Commons: exact Argiope picta prey-wrapping photograph
- healthdirect: Spider bites
Profile review
Published by Spider Identifier Australia. Last factual review: 13 August 2026.
Quick identification
- Colourful Argiope orb-weaver with paired legs held together in sets
- Female has a silvery front body and bold yellow, white, black and brown abdominal patterning
- Usually sits in the centre of a round orb web with white zig-zag or banded silk decoration
- Strong northern Australia clue, especially tropical Queensland gardens, rainforest margins, open forest and shrubby vegetation
What to check next
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.
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 it is usually seen
Rainforest margins, open forest, heathland, gardens, houses, shrubs and low vegetation in northern Australia, especially tropical Queensland and nearby northern habitats where medium to large orb webs can be built.