[1] Unlike other known Ummidia species, it creates a trapdoor at the entrance of the burrow.

[1] Its specific name means "of Algarve", the region and Moorish medieval kingdom in South Portugal it was found in.

[2] Female Ummidia algarve have short, straight, "mushroom-shaped" spermathecae and a warty texture to the abdominal cuticle.

The chelicerae are large and dorsally black (ventrally orange-brown), with the fang serrated on the inner ridge.

Males have a relatively short, strong and smoothly curved embolus with a subapical fishhook tooth and low ocular quadrangle ratio.