Abstract
Hypogastrura gracilis Folsom is redescribed from cotypes and Chinese specimens, and a lectotype and 4 paralectotypes are designated. Specimens referable to Ceratophysella adexilis Stach are described. Ceratophysella quinidentis (Jia, Shi & Chen) is reevaluated from type specimens and recognized as a new junior synonym of C. duplicispinosa (Yosii). Many of the world's species of Hypogastruridae were described well before the systematic importance of mouth-part morphology, chaetotaxy, and sensilla arrangement was adequately appreciated. Numerous Asian species described 40 or more years ago are difficult to recognize because the original descriptions are very incomplete compared with current standards, which has led to descriptions of synonymous taxa or to the outright inability to confidently identify even common, widespread species.
NSTL