Derek Galon / Spiny Orb Weaver (Gasteracantha sp) Dominica.

Derek Galon / Spiny Orb Weaver (Gasteracantha sp) Dominica.

Emanuele Biggi / Spiny orb-weaver spider (Gasteracantha diardi) on white background. Borneo.

Emanuele Biggi / Spiny orb weaver spider (Gasteracantha sp), Madagascar.

Lorraine Bennery / Spinybacked orb weaver spider (Gasteracantha sp.) Andasibe-Mantadia National Park, Madagascar, November.

Chris Mattison / Thorn-back spider (Gasteracantha cancriformis) on white background, Costa Rica.

Chris Mattison / Spiny-back spider (Gasteracantha cancriformis) egg sac Costa Rica. Focus-stacked image.

Tim Laman / Spiny-backed orb-weaver spider (Gasteracantha sp) on rainforest leaf in Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Spiny backed spider (Gasteracatha sp) on dew covered web, Tari Valley vicinity, Southern Highlands Province, Papua New Guinea

Tim Laman / Spiny-backed Orb-weaver (Gasteracantha sp) spider in the rainforest, Sierra Madre National Park, Luzon, Philippines, September

Emanuele Biggi / Thorn spider (Gasteracantha versicolor formosa) hanging down from its web under a tree in the forest, Ranomafana National Park, Madagascar.

Derek Galon / Spiny orb weaver (Gasteracantha), on web, Dominica, Eastern Caribbean.