Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 90. (Budapest 1998)

Makhan, D.: Three new genera and two new species of Hydrochidae from different parts of the World (Coleoptera)

Figs 24-30. Last sternite with spines (scale = 0.25 mm): 24 = Hydrochuspiroei MAKHAN, 25 = //. merkli MAKHAN. 26 = Hydrochus pumilio KNISCH. 27 = H. radhakisunae MAKHAN, 28 = H. rattanae MAKHAN. 29 = Hydrochus beeneni MAKHAN, 30 = H. stolpi GERMAIN