The Jewel Spider also called a Spiny Spider or a Christmas Spider (Astracantha minax, previously Gasteracantha minax), is a medium-sized spider. The female is about 10 mm across its abdomen, and the male around 5 mm. It has 6 spines on its round, hard abdomen, giving it a crab-like appearance, and is very brightly coloured, with red legs. On its abdomen it has yellow and white spots on a black background. These spiders rarely bite, and if they do, the poison normally only causes a localised reaction.


  • Scientific classification
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Subphylum: Chelicerata
  • Class: Arachnida
  • Order: Araneae
  • Infraorder: Araneomorphae
  • Family: Araneidae
  • Genus: Austracantha
  • Species: A. minax
  • Binomial name: Austracantha minax