Both sexes of Rotundrela orbiculata are known. Males have a total length of 5.40 mm with a reddish browncarapace and orange chelicerae. The abdomen displays a pale pattern on a dark background with distinctive kidney-shaped patches and rounded spots. Females reach 6.24 mm in total length with an orange carapace and sternum that have dark rims.
Ecology
Rotundrela orbiculata are free-running ground-dwelling spiders that are collected from litter and occasionally with pitfall traps.