Denning described the apparently uncommon species Polycentropus timesis (Denning, 1948) based on a single male specimen from Massachusetts. Since its original description, additional specimens of P. timesis have been collected from New Hampshire and Michigan. The previous description and illustration of the species are inadequate. Here, the male of the species is redescribed and re-diagnosed, the female is described and diagnosed for the first time, the wing venation and the genitalia of both sexes are figured, and the species is transferred to the genus Holocentropus, resulting in Holocentropus timesis (Denning, 1948), new combination.