anonyme
As I stated, there is a colony on Whidbey Island. Black widows are extremely rare in Western Washington.
Medical professionals are notoriously ignorant about spiders and spider bites, as is evident on the link provided above. The photos are highly questionable for the species they supposedly represent, for one thing. (I’m going to check my reference material on the eye pattern for Cheiracantheum; I don’t see a dark clypeus in the photo provided, which is diagnostic.) For another, they parrot the common (but erroneous) so-called, other common name for the Hobo spider (T. agrestis) as “the Aggressive House Spider”, misinterpreting the word “agrestis” as “aggressive”. The word agrestis refers to agriculture; this was once a rural species, now urbanized. You’d think a supposedly authoritative website would check their facts a little more carefully.