Onobops umbilispiralis nov. spec., a new species of gastropod from the Miocene of western Amazonia

The gastropod Onobops umbilispiralis nov. spec. is described from the late Middle to early Late Miocene Pebas Formation of Peruvian Amazonia. The new species is characterised by the coarse but relatively well developed spiral ribs that extend well into a broad umbilicus. The broad umbilicus distinguishes the species from other Miocene and Recent Onobops species. The name of the new species materialised after suggestions from the general audience visiting an exhibition on systematics at Naturalis.