This is one amazing spider. Less potent venom than a black widow, still has enough venom to sometimes require medical treatment (humans) from a bite. They out-compete native spider species and are replacing them. Fascinating article with more crazy info, but here's the best bit I think:

false widows set silk strings loaded like springs attached to surfaces. When a prey brushes against these threads, it triggers the booby trap and the animal is lifted off the ground. The spider can then release other threads and hoist the prey with exceptional ease using its silk threads like a pulley system.

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