Pumilibranchipus deserti gen. n., sp. n. is described from the KauKausib River area in Namibia. The genus has been allocated to the Branchipodidae based on the fusion and chitinisation of the basal segments of the male antennae to form a clypeus. The main distinguishing characteristics of Pumilibranchipus are the single median process on the anterior margin of the clypeus, a well-developed, bifurcate frontal appendage and simple terminal antennal segments. The apical part of the penes, armed with a single row of large, tooth-like processes, is unusual for Branchipodidae.