Grey House Spider (Badumna longinqua) lives in dark dry areas across Australia, New Zealand, Japan, United States, Mexico, Uruguay.
Fascinating facts about the Grey House Spider
- The grey house spider's front-middle eyes stand out because they are about one and a half times larger than the surrounding eyes, creating a distinctive facial pattern. All eight eyes are small and black, giving the spider a subtle, uniform eye colour. These enlarged eyes sit on the cephalothorax and help it detect movement in its dimly lit retreats. The contrast between the larger pair and the smaller surrounding eyes is a key identification feature.
- A female grey house spider can spend her entire life in the same web, never abandoning the retreat she builds. In contrast, a sexually mature male must leave his home to search for a mate, beginning his hunt in the warmer months from summer through to early autumn. This seasonal movement ensures that males encounter females when they are ready to reproduce. The differing life-stage behaviours mean females remain hidden while males wander in search of partners.
- The grey house spider weaves its web using special cribellate silk that forms a zig-zag pattern across the strands, giving the structure a messy, tangled look. From a tubular entrance the spider builds a multitude of ladder-like webs that radiate outward, a hallmark of ladderweb spiders. Because the web is occupied for long periods, the female often remains in it for life, and the spider adds and repairs silk each night, making the web increasingly untidy over time.
- The most significant threat to the grey house spider comes from the hunting white-tailed spider of the genus Lampona, which preys on it preferentially. Other predators include parasitic wasps, flies and cellar spiders.
- Originally from eastern Australia, it has established populations in other countries such as Argentina, Brazil, Germany, Japan, the United States, Uruguay, Canada and South Africa. Human transport of goods has driven this spread.
Sources
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At a glance
RangeAustralia, New Zealand, Japan, United States, Mexico, Uruguay
HabitatDark dry areas
DietFlies and insects
About the Grey House Spider
In the dimly lit recesses of our homes, a master weaver resides, the Grey House Spider, its unassuming presence belied by an extraordinary ability to craft intricate webs that shimmer like ghostly tapestries. With deliberate, unhurried movements, it navigates the dusty corners of our domestic realms, ever vigilant for the faint tremors that signal the presence of unsuspecting prey. As it moves, its eight legs seem to dance across the shadows, a testament to the quiet, unobtrusive elegance of this oft-overlooked arachnid.
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