Báborská, Z., J. Skuhrovec, and M. Košťál. “The Mature Larva and Pupa of Tychius subsulcatus Tournier, 1847 (Coleoptera, Curculionidae), With Comments on Its Biology and Phylogenetic Relationships”. Zootaxa, vol. 4568, no. 1, Mar. 2019, pp. 168–176, doi:10.11646/zootaxa.4568.1.10.