Promyrmekiaphila clathrata is a species of wafer-lid trapdoor spider in the family Euctenizidae that is endemic to the state of California in the United States.

[2] Its range is restricted to the central and northern California Coast Ranges, from San Benito County to Glenn County.

[2] Like its sister species, C. winnemem, it can be distinguished from species in similar genera by the dusky chevron pattern on its abdomen.

[2] It prefers vegetated, mesic habitats that retain some moisture, where it builds burrows in soil up to 30 cm deep.

[2] Like other members of this family, it covers its burrow entrance with a door made of silk and soil.