PEDETONTUS GERSHNERI, A NEW SPECIES OF MACHILIDAE FROM THE INTERIOR HIGHLANDS OF NORTH-AMERICA (INSECTA, MICROCORYPHIA)

Pedetontus gershneri, a new species of Microcoryphia, is described fro m Magazine Mountain, Logan County, Arkansas. The new species was found in leaf litter in dense deciduous forest. The presence of 2 pairs of exsertile vesicles on urosternites II-V indicates a close relationship with Pedetontus species in western North America. Labial and maxillar y palpi characters distinguish P. gershneri from its western relatives . Machiloides banksi, recorded for the first time from Arkansas, is fo und in more xeric habitats under rocks on the south facing slope of th e mountain.