Lojková, S., Degma, P., & Kodada, J. (2014). Morphometry and redescription of Parahelichus granulosus (Delève, 1974)  with description of P. pseudogranulosus, a new cryptic species of Long-toed Water Beetles (Coleoptera: Dryopidae) from Indochinese peninsula, and proposal of a new synonym for Praehelichus sericatus (Waterhouse, 1881) from China. Zootaxa, 3852(4), 475–488. https://doi.org/10.11646/zootaxa.3852.4.5