A revision of distribution, ecology and conservation issues of the threatened comb-claw beetle Gerandryus aetnensis (Coleoptera: Tenebrionidae, Alleculinae)
Keywords:saproxylic beetles, Alleculinae, IUCN threatened species, geonemy, endemic/subendemic species, Italy
Gerandryus aetnensis (Rottenberg, 1871) is a rare and localized beetle, previously known only for Maritime Alps and Sicily. In this paper we provide a revision of geonemy, ecology and status of conservation, including a proposal for a new assessment of its extinction risk in the framework of the European saproxylic beetles, based upon several new records from western Alps, northern, central, southern Apen- nine, and Sicily. Thus, the species is a W-Alpino-Apenninic subendemic saproxylic species, associated to tree hollows in both coniferous and deciduous forests. We also propose to assess G. aetnensis as Vulnerable at global and Italian level.
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