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Insecta - Coleoptera - Helophoridae
It was synonymized subjectively with Zetemenos by Ponomarenko (1992); it was reranked as Helophorus (Mesosperchus) by Fikacek et al. (2012) and Ponomarenko (2014).
It was assigned to Hydrophilidae by Ponomarenko (1977), Ponomarenko (1985) and Carpenter (1992); and to Helophorus by Fikacek et al. (2012) and Ponomarenko (2014).
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.