P. E.  Stueben, ?Analytical catalogue of Westpalaearctic Cryptorhynchinae. Part 2: Acalles, Acallocrates. (Col.: Curculionidae: Cryptorhynchinae)?, vol. 4. pp. 11-100, 2003.

P. E.  Stueben, ?Analytical catalogue of Westpalaearctic Cryptorhynchinae. Part 2: Acalles, Acallocrates. (Col.: Curculionidae: Cryptorhynchinae)?, Snudebiller, vol. 4. pp. 11-100, 2003.

P. E.  Stueben, ?Analytical catalogue of Westpalaearctic Cryptorhynchinae. Part 2: Acalles, Acallocrates. (Col.: Curculionidae: Cryptorhynchinae)?, Snudebiller, vol. 4. pp. 11-100, 2003.