Poltys laciniosus
Wrapped-Up Twig Spider Identification in Australia
Cryptically camouflaged Australian orb-weaver that folds its legs around a raised body and can look like a broken twig, gall or bark fragment by day.
Usually low riskAbout the Wrapped-up twig spider
The Wrapped-up twig spider, Poltys laciniosus, is a cryptic araneid that hides on vegetation in daylight and builds a fine orb web after dark. The raised eye tubercle, compact folded posture and lumpy brown-grey pattern can make it disappear against a dead twig, but the camouflage is a starting clue rather than a species diagnosis.
How to identify Poltys laciniosus without trusting camouflage alone
Start with the genus-level body plan. Smith’s Australian revision describes Poltys as an araneid with a pear-shaped carapace and a raised eye tubercle; in daylight the spider draws its legs tightly around the prosoma so only the median eyes may protrude. P. laciniosus females have a relatively broad, tall carapace, dorsal projections above the posterior median eyes and a patterned abdomen that can be brown, grey, black and pale. The exact species is separated from other Poltys by adult genital characters and the combination of eye-tubercle, carapace, leg and abdominal details. A twig-like silhouette, a night orb web or a Queensland photograph can support the comparison, but none proves P. laciniosus by itself.
Clues that are not enough on their own
- Looking like a twig, gall or bark chip without a clear body and eye-tubercle view
- Brown, grey or black camouflage colour alone
- A nearby orb web without seeing the spider that built it
- A daytime resting position assumed to identify one Poltys species
- A state, garden or woodland record used as a substitute for adult anatomy
Colour, sex and life-stage variation
Sex and life stage change the appearance substantially. Smith records female carapace lengths of about 2.82–4.49 mm and much smaller male carapaces of about 0.78–1.31 mm; these are carapace measurements, not a universal whole-body size limit. Females have the larger, more conspicuously shaped abdomens, while adult males are lightly built and do not make capture webs. Abdominal outline, eye-tubercle length, leg proportions and colour vary between individuals and populations, and juveniles can have flattened leg setae or a different silhouette. Worn hairs, flash, shadow and a folded posture can erase or exaggerate the pattern.
Behaviour, web and retreat
Australian Poltys are nocturnally active orb-weavers. Except for adult males, they build a fine-meshed web after dark, take moths and other insects, and usually ingest the web around dawn. Smith records webs from roughly 0.2 m to about 4 m high, often across openings in vegetation. During the day the spider rests motionless on a nearby twig, trunk, low herb or curled leaf; dead twigs are especially common for southern populations, while tropical spiders use living vegetation more often. Egg sacs are attached to twigs or leaves. Do not shake the plant to make a hidden spider move.
Australian distribution
The Australian Faunal Directory lists P. laciniosus in New South Wales, Queensland, Victoria, South Australia, Western Australia and the Northern Territory, and describes it as an Australian endemic. Its note, based on Smith (2006), says that outside the moist east coast it may occur wherever reasonably dense scrub is available. The World Spider Catalog accepts P. laciniosus and records its distribution as Australia. Smith synonymised P. bimaculatus, P. mammeatus and P. salebrosus under this name. Do not add Tasmania or the ACT from a broad “Australian twig spider” label, and do not treat a single state record as a species-level photo key.
What to do if you find one
Leave a resting spider and its web undisturbed. Photograph the entire plant or bark surface, then take dorsal and side views from a distance, recording whether the image was made by day or at night and which state it came from. A night photograph of the orb web and a daytime photograph of the folded spider are complementary, not interchangeable evidence. If relocation is necessary, use a clear container and card without pinching a twig or handling the spider. Follow healthdirect advice after any bite and seek emergency help if a medically significant lookalike cannot be ruled out.
Compare with similar spiders
Use body shape, web or retreat, location and behaviour together before settling on a likely match.
Sources for this profile
These accessible authoritative sources support the identification and bite-safety context on this page.
- Australian Faunal Directory: Poltys laciniosus
- Atlas of Living Australia: Poltys laciniosus
- World Spider Catalog: Poltys laciniosus
- Australian Museum: Poltys revision
- Smith 2006: Poltys revision PDF
- Smith 2008: rearing Poltys
- Exact-species image and licence record
- healthdirect: Spider bites
Profile review
Published by Spider Identifier Australia. Last factual review: 13 August 2026.
Quick identification
- Daytime spider folded tightly around a raised, pear-shaped body so it resembles a broken twig, gall or bark fragment
- Raised eye tubercle and a compact orb-weaver build, not a flat huntsman or a plain stick insect
- Brown, grey, black and pale patterning can blend with dead twigs, bark and low vegetation
- Fine, closely meshed orb web usually built at night and re-ingested around dawn; adult males do not make the web
What to check next
Check the whole resting shape, raised eye tubercle, nearby vegetation and whether a fine orb web appears after dark. Camouflage alone cannot separate P. laciniosus from other Poltys, Dolophones or Acroaspis; keep a broader orb-weaver result when the body and locality are unclear.
When to seek medical help
No specific medical significance is established for this orb-weaver. Do not handle or provoke it. For a bite, follow healthdirect first-aid guidance and seek medical care for severe or spreading symptoms, allergic signs, infection or uncertainty; suspected funnel-web or mouse-spider bites need emergency treatment.
Where it is usually seen
Dense scrub, woodland edges, dead twigs, low herbage, curled leaves and openings in vegetation that form flight corridors for moths. The accepted Australian range covers New South Wales, Queensland, Victoria, South Australia, Western Australia and the Northern Territory; webs may be from about 0.2 to 4 m above ground.