Gnaphosidae
Long-Spinneret Ground Spider Identification in Australia
Family-level guide to Australian gnaphosid ground spiders: fast hunters with paired cylindrical rear spinnerets, usually found in litter or under bark and stones.
Usually low risk“Long-spinneret ground spider” is a practical field label for a possible member of Gnaphosidae, not one Australian species. Start with a small-to-medium spider running close to the ground, no prey-catching web and a conspicuous pair of cylindrical anterior spinnerets at the rear. Those spinnerets can look like two short parallel barrels from above, but length varies and a blurred rear silhouette is not enough. Australian gnaphosids are diverse, from ordinary charcoal or pink-brown litter hunters to shiny, flattened or highly specialised forms. A clear dorsal photograph can sometimes support the family; genus or species usually requires eye, mouthpart, spinneret-spigot and reproductive anatomy examined by a specialist.
Quick identification
- Pair of enlarged cylindrical anterior spinnerets separated at the rear
- Low-running hunter, commonly charcoal grey to pinkish brown; some forms shiny or strongly flattened
- No permanent prey-catching web, though a silken resting or egg retreat may be present
- Found in leaf litter, under bark, rocks or logs, and sometimes wandering across floors
- Family-level match only unless fine anatomical characters can be examined
What to check next
Photograph the whole spider from directly above, then take a sharp rear close-up without touching it. Record body length without legs, exact locality, time and hiding place. Confirm two separated cylindrical spinnerets and the absence of a capture web; otherwise compare wolf, prowling, spotted ground and black house spiders.
When to seek medical help
No useful Australian clinical series was found that supports a predictable bite syndrome for Gnaphosidae as a family, so “ground spider” should not be used to dismiss an unwitnessed bite. Avoid handling. For a witnessed minor spider bite, healthdirect advises washing with soap and water and applying a cold pack for pain. Seek medical advice if pain is severe or does not settle within a few hours, if swelling or itching worsens after 24–48 hours, or if you are worried; call the Poisons Information Centre on 13 11 26 for advice. Call 000 for collapse, breathing difficulty or other signs of anaphylaxis. A suspected funnel-web bite remains an emergency and should receive pressure immobilisation and an ambulance.
Where it is usually seen
Australia-wide in habitats from rainforest to desert. Most are terrestrial or bark-associated hunters in leaf litter, woodland debris, beneath stones, logs and loose bark; some enter garages or houses while wandering, and specialised species occupy dunes or narrow bark and rock spaces.