Triangulate Combfoot (Steatoda triangulosa) lives in dark places across Europe and North America. It feeds on flies and spiders.
Fascinating facts about the Triangulate Combfoot
- Adult female triangulate cobweb spiders are tiny, measuring only 3 to 6 mm in length. Their cephalothorax is a brownish-orange colour and they bear long, yellowish legs that are covered in fine hairs. The abdomen is round and bulbous, creamy in hue and marked with parallel purply-brown zigzag lines that run from front to back, giving the species its distinctive look. This colour pattern clearly separates it from other theridiids sharing the same habitat.
- The triangulate cobweb spider is a versatile predator that captures a broad spectrum of arthropods. Its diet includes ants - even fire-ants - as well as pillbugs, ticks and a variety of other spiders, notably the brown recluse which is considered harmful to humans. Whatever it ensnares in its irregular cobweb is promptly consumed, allowing the spider to exploit whatever prey happen to wander into its dark, three-dimensional trap.
- Each female produces an egg sac that is constructed from loosely woven silk and is roughly the same size as the adult spider itself. Inside, the sac holds about thirty eggs, providing the next generation with a compact, protected environment. Though scientists have speculated about possible parthenogenetic reproduction, this has not been proven.
- Within its genus the triangulate cobweb spider is the most voracious and prey-driven, even though it remains one of the smaller Steatoda species. It spends hours each day carefully constructing its irregular three-dimensional web, a structure strong enough to hold prey of the size it targets. The spider's web often collects a variety of dead insects, from stinkbugs and other spiders to large centipedes and wasps, showing how aggressively it captures food.
- The triangulate cobweb spider originates from Eurasia but has become a truly cosmopolitan species, having been introduced to North America, Argentina, the Canary Islands and South Africa. It now lives mainly in human dwellings, spinning its three-dimensional cobwebs in dark corners of houses and other man-made structures.
Sources
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At a glance
RangeEurope and North America
HabitatDark places
DietFlies and spiders
About the Triangulate Combfoot
In the shadowy recesses of our world, the Triangulate Combfoot weaves its intricate webs, a masterful architect of silken threads and cunning deception. With deliberate, almost languid movements, this spider navigates the intricate latticework of its own creation, ever-vigilant for the unwary prey that will become its next meal. As it glides effortlessly across the sticky strands, its eyes gleam like dark jewels, radiating a quiet, calculating intelligence that is at once fascinating and unsettling.
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