A relic of an earlier age, this Protocrena species was only recently discovered in 2020 by occlupanologist E. Welby, who noted its great similarity to P. obtusilateri, though the oral groove on P. escharops is smaller.  Specific name comes from the very faint dimpled pattern that cover its integument, which is only visible when held up to light and gently wiggled before the viewer. The reason for this scarring, along with any information as to its host, remains a mystery.