Taxonomic and nomenclatural acts formalizing the classification provided in the world catalogue of the Cleonini (Curculionidae: Lixinae) Author Meregalli, Massimo text Zootaxa 2017 2017-09-22 4323 3 445 450 journal article 32014 10.11646/zootaxa.4323.3.13 e86a0e05-0d33-4807-bc19-720be24a2c53 1175-5326 920990 1A2Aabb3-9Bda-484D-8A19-A1Ffd7647D6A Menecleonus simplicirostris (Chevrolat, 1873) transferred from synonymy with M. virgatus (Schoenherr, 1832) to synonymy with Menecleonus signaticollis (Gyllenhal, 1834) syn. n. (ST of M. simplicirostris examined, photograph in WCC). Remarks. Menecleonus signaticollis and M. anxius were both described from Persia , whereas M. virgatus was described from Caucasus. All specimens examined from Caucasus differ from those from Persia in the key-characters cited by Faust (1904) for the distinction between the two species. It seems thus that the two taxa are geographical allopatric vicariants.