|Sydney funnel-web spider|
The genus Hadronyche also has similar highly venomous spiders, especially the Blue Mountains Funnel-web (Hadronyche versuta).
These spiders construct a funnel shaped web and lurk for prey in the small end of the funnel. They frequently search for a place to nest under human dwellings, or under nearby rocks, logs, or other similar objects. They are most active at night. They are not extremely large, the largest being about 40 mm long, but they bite repeatedly and in a very aggressive manner. Most bites seem to occur when the male spiders wander about looking for receptive female Sydney funnel-web spiders. Male spiders are often found in swimming pools, where they have been trapped after falling in, in yards, and in garages. An antivenin has been available since 1980.