What are these 'trapdoor spiders' spotted around San Diego?

Sometimes mistaken for small tarantulas, ‘trapdoor spiders’ are native to Southern California.

Native species spotlight: the California Trapdoor Spider - suburban Adventuress

Jumping Spiders

What kind of spider is all black and about the size of a quarter? - Quora

Spooky-looking 'trapdoor spiders' spotted around San Diego

Ravine Trapdoor Spider: All You Need to Know in One Quick Guide - What's That Bug?

A Male Trapdoor spider in San Antonio, Texas - Bugs In The News

California Trapdoor Spider

California trapdoor spider, Bothriocyrtum californicum

Phylogeography and cohesion species delimitation of California endemic trapdoor spiders within the Aptostichus icenoglei sibling species complex (Araneae: Mygalomorphae: Euctenizidae) - Newton - 2023 - Ecology and Evolution - Wiley Online Library