Blestia is a monotypic genus of North American dwarf spiders containing the single species, Blestia sarcocuon. It was first described by Alfred Frank Millidge in 1993,[1] and has only been found in United States.[2]
B. sarcocuon is unique in that the males possess a horizontal groove on the clypeus situated beneath the eyes. This groove is actually a pair of sulci, separated in the middle by a ridge of integument. The floor of each sulcus features irregularly-shaped clusters of small pores; the function of these pores, which may or may not be sexual in nature, is currently unknown.