Hobo spiders - known by the scientific name Tegenaria agrestis
- look like common house spiders but are bigger, with thicker, hairy legs.
Simon Fraser University graduate students Samantha Vibert and Catherine Scott, working with SFU biology professor Gerhard Gries, recorded the vibrations made by male black widow spiders (Latrodectus hesperus), hobo spiders (Tegenaria agrestis
) and prey insects.
, the aggressive house spider, causes the same symptoms and the bite is identical.
Necrotic arachnidism in the Northwest United States and its probable relationship to Tegenaria agrestis
However, cases of arachnid envenomation from the hobo spider (Tegenaria agrestis) are being reported increasingly in the Pacific Northwest.
Biology and medical importance of the aggressive house spider, Tegenaria agrestis, in the Pacific Northwest (Arachnida: Araneae: Agelenidae).