[1]
J. J. Astrin and P. E. Stüben, “Molecular phylogeny in ’nano-weevils’: description of a new subgenus Nanoacalles and two new species of Calacalles from the Macaronesian Islands (Curculionidae: Cryptorhynchinae)”, Zootaxa, vol. 2300, no. 1, pp. 51–67, Nov. 2009.