Astrin, Jonas J., and Peter 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 2300, no. 1 (November 30, 2009): 51–67. Accessed June 24, 2025. https://www.mapress.com/zt/article/view/zootaxa.2300.1.4.