Otiorhynchus (Nihus) grischunensis sp. n. - a new species of the O. rhilensis species group from the Swiss Alps (Curculionidae, Entiminae)

Otiorhynchus (Nihus) grischunensis sp. n. is described from Grisons, Switzerland. The new species was exclusively found in the alpine area and is thought to be endemic. Otiorhynchus grischunensis belongs to the O. rhilensis species group and is compared with its presumably closest relative, O. rhilensis. The new species fills a gap in the north- westernmost distribution of the O. rhilensis group and hence allows new insights into the biogeographical history of the group.