3/10/2024 0 Comments Ground spider spidersThe burrow is often weakly silk-lined and rarely more than 30 cm deep. The tunnel leads back into a short surface chamber from which the burrow descends. The silk entrance to the burrow of a Sydney Funnel-web Spider has a more or less well-defined funnel-like silk entrance 'vestibule' within which is a collapsed, tunnel-like structure with one or two slit-like openings. Indeed if a spider burrow has obvious silk trip-lines around its rim, you can be fairly certain that it belongs to a funnel-web spider. These trip-lines alert the spider to possible prey, mates or danger. The most characteristic sign of a funnel-web's burrow is the irregular silk trip-lines that radiate out from the burrow entrance of most species. Gardeners and people digging in soil may encounter funnel-webs in burrows at any time of the year. Funnel-webs are very vulnerable to drying out, so high humidity is more favourable to activity outside the burrow than dry conditions. Rain may flood burrows and the temporary retreats of male funnel-webs, causing an increase in their activity. In gardens, they prefer rockeries and dense shrubberies, and are rarely found in more open situations like lawns. Sheltered retreatsįunnel-webs burrow in moist, cool, sheltered habitats – under rocks, in and under rotting logs, crevices, rot and borer holes in rough-barked trees. Illawarra wisharti is a single species in its own genus, isolated in the wet forests of the Illawarra region of New South Wales. anzes group, a single, far northern outlier species in rainforests north of Cairns, north Queensland.'lamington' group, several species confined to discrete rainforest areas in New South Wales and Queensland.adelaidensis group, isolated in the dry forests of the Gulf Region of South Australia the only trap-door building funnel-web spiders.
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