Across the Americas
Its known range covers North, Central and South America and the Caribbean. It is introduced in Hawaii. That broad map does not imply uniform occurrence: local habitats and the populations actually studied still matter.
A conspicuous web resident
Females can sit at the hub of their orb web during the day. The broad abdomen and its projections give them an unusual outline. The conspicuous spider and the delicate web are different parts of the same hunting strategy.
Not every individual has six spines
A 2020 study documented both four-spined and six-spined Caribbean forms, alongside different colours. Colour alone did not reliably reflect genetic relationships. Visible variation therefore does not automatically mean different species.
Sources & image credits
- World Spider Catalog · Gasteracantha cancriformis ↗
- Ximenes & Gawryszewski (2019) · Prey and predators perceive orb-web spider conspicuousness differently ↗
- Chamberland et al. (2020) · Phylogeography of the widespread Caribbean spiny orb weaver ↗
Sources checked: 2 November 2026. Comparisons carry the qualifications stated in each article.