Males of Diores simoni have a total length of 3.28 mm, while females measure 3.98 mm. The carapace and chelicerae are greyish-yellow, while the sternum and legs are pale yellow. The dorsum of the opisthosoma is sepia with a pale brown scutum in the middle in males. Females have similar coloration but the dark dorsal area of the abdomen extends around the spinnerets.
Ecology
Diores simoni are free-living ground-dwellers that construct igloo-shaped retreats with small stones, characteristic behavior of the genus Diores.