Revision of Vesiculentomon, Nosekientomon n. g. (Protura: Acerentomidae, Nipponentominae), and a Key to Genera of Nipponentominae

ABSTRACT Based on recent reexamination of types, Vesiculentomon ruseki Nosek, 1977, differs significantly from Vesiculentomon marshalli Rusek, 1974, in composition and shape of maxillary gland, number of anterior setae on metanotum, and shape of foretarsal sensillum t1. A new genus Nosekientomon is erected for V. ruseki. Nosekientomon n. gen. is characterized by three pairs of anterior setae on the metanotum, claviform foretarsal sensillum t1, and a smooth globular vesicle on the calyx of the maxillary gland. Vesiculentomon Rusek has four pairs of anterior setae on the metanotum, baculiform foretarsal sensillum t1, and a large vesicle near the calyx with dense granulation along its narrow proximal part. The original descriptions are corrected and supplemented with new characters, including head chaetotaxy, setal lengths, and porotaxy. A key to world genera of Nipponentominae is provided.