aptostichus

Unlike other trapdoors, aptostichus will poke out of their burrow when hungry

Unlike other aptostichus species, these build large turrets

Mature female

Mature male

Icenoglei prefer shaded oak riparian woodland with abundant leaf litter. These are quite distinct with a fine golden integument on the cephalothorax, and a rich dark mahogany color.

Extremely rare; previously thought extinct, I found this specimen after a severe thunderstorm in the mojave desert.

Euctenizidae are the new-world equivalent to Idiopidae, and both are sibling families that diverged from a common ancestor. These settle in very fast. This particular species likes to use a small leaf as a door, several were found exhibiting this behavior.