Insecta - Coleoptera - Hydrophilidae

Synonym: Mesohelophorus sibiricus Ponomarenko 1977 [replaced name]

Full reference: M. Fikacek, A. Prokin, R. B. Angus, A. Ponomarenko, Y. L. Yue, D. Ren, and J. Prokop. 2012. Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga). Acta Entomologica Musei Nationalis Pragae 52:89-127

Belongs to Helophorus (Mesohelophorus) according to M. Fikacek et al. 2012

Sister taxa: none

Type specimens:

• Helophorus (Mesohelophorus) palaeosibiricus: PIN 3064/841, an exoskeleton
• Mesohelophorus sibiricus: PIN 3063/841, an exoskeleton. Its type locality is Baissa (PIN collection 3064), which is in a Berriasian lacustrine - large marl in the Zaza Formation of the Russian Federation.

Ecology:

Average measurements (in mm): body 3.50 x 1.80, elytron length 2.10