Miturgidae
Prowling Spider Identification in Australia
Family-level guide to Australian Miturgidae: fast ground hunters that shelter in silk cells but do not use a prey-catching web.
Usually low risk; bite data limited“Prowling spider” on this page means a possible member of the family Miturgidae, not one species. Australian miturgids are fast araneomorph hunters commonly found in dry landscapes, and many resemble wolf, sac, long-spinneret ground or small huntsman spiders. The family is also taxonomically difficult: a 2023 revision of widespread stripe-less Australian miturgines erected five genera and described 48 species. Start with behaviour, the two-clawed feet with dense claw tufts, eye arrangement and a silk resting cell rather than brown colour or speed alone. Those small structural characters usually need sharp macro photographs or an adult specimen, so “prowling spider” is often the most responsible field result.
Quick identification
- Fast araneomorph hunter running on ground, litter, bark or low vegetation rather than waiting in a capture web
- Usually brown, grey, fawn or orange-brown, sometimes striped but many Australian genera are stripe-less
- Eight eyes in two rows; the rear row is commonly curved backwards, but the detail requires a close front-dorsal view
- Two claws at each foot with dense claw tufts that improve grip; this is a macro or microscope clue, not a naked-eye test
- Dense silk resting or egg cell under a log, rock, bark or debris may support the family, even though there is no prey-catching web
What to check next
Take dorsal, front-eye and side views without touching the spider, include the tips of the front and rear legs when possible, add a body-only scale and photograph any silk cell in place. Record locality, date, time and microhabitat. Keep the result at “possible Miturgidae” if the eyes, feet or adult anatomy are not clear.
When to seek medical help
No reliable Australian clinical series covering Miturgidae as a family was found, and the many genera should not be given one invented venom profile. They are not listed among Australia’s medically important spider groups, but a defensive bite can still cause local pain or swelling. Avoid handling. For a clearly witnessed ordinary spider bite, wash with soap and water and use a wrapped cold pack. Call the Poisons Information Centre on 13 11 26 or seek medical care for severe or persistent pain, spreading swelling, vomiting, headache, wound deterioration or other illness; call 000 for breathing difficulty, collapse or anaphylaxis. Use emergency funnel-web guidance instead if the spider was a large dark mygalomorph rather than this slimmer araneomorph hunter.
Where it is usually seen
Ground, leaf litter, grass tussocks, bark, fallen timber, rocks and debris in every Australian state and territory, particularly open eucalypt forest, dry woodland, semi-arid country and desert. Some species also cross garden paths, house edges and floors while hunting at night.