spider bites in Australia

Introduction

there are 2 main venomous spiders in Australia whose bite can kill humans (although no deaths since 1979 when antivenom was made available in 1980):
- male Sydney funnel web spider (Atraxis)
  - found in the region around Sydney
  - Funnel-web spider antivenom has been given to at least 100 patients since 1980
  - see Sydney funnel web spider bites (Atraxis)
- female Redback spider (Latrodectus hasselti):
  - found all over Australia and is common in urban garden sheds.
  - ~2000 people are bitten each year by Redback Spiders.
  - see red back spider bites / Latrodectism
in addition, the Mouse Spider can give envenomation similar to the Funnel Web spider but bites are rare, and can be treated with Funnel web antivenom.
many other spiders can give bites and some can cause local pain, nausea, headaches, dizziness and vomiting.
some spider bites have been attributed to causing local tissue necrosis and perhaps chronic ulceration (“necrotising arachnidism”):
- white tailed spider - although there is a lot of controversy as most bites do not result in long term sequelae
- wolf spiders
- Sac Spiders (Cheiracanthum species)
- The Recluse or Fiddleback Spider belongs to the genus Loxosceles.
  - Recluse spiders are found in many parts of the world and have been introduced into Australia but rarely cause bites
  - the venom of this spider can cause severe skin necrosis and rarely this can be fatal although not many deaths have been recorded
  - https://en.wikipedia.org/wiki/Brown_recluse_spider

Persistent paraesthesiae from prolonged contact with some spider webs

bushwalkers wearing shorts who walk through areas with orb weaving spider webs can develop persistent, prolonged paraesthesia presumably due to some toxin on the sticky webs
- John McGinlay, a walker who walked solo across Australia's Simpson Desert in 2026 developed this issue - “every day my legs got hundreds of spider webs on them - after about day 4 that section went numb and its still numb (?a month later)”