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Genus Helophorus

underwater beetle - Helophorus Helophorus Helophorus (live) - Helophorus Water Scavenger Beetle - Helophorus Lesser water beetle1 - Helophorus Hydrophilid - Helophorus beetle - Helophorus beetle - Helophorus orientalis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles)
Superfamily Hydrophiloidea (Water Scavenger and Clown Beetles)
Family Hydrophilidae (Water Scavenger Beetles)
Genus Helophorus
Numbers
42 species in North American (nearctica.com)
Identification
adults have 5 longitudinal grooves in the pronotum
Range
holarctic
Habitat
on or around submerged or emergent vegetation in standing or slow-moving water
Internet References
live adult image and description of Helophorus species (Cheryl Podemski, U. of Alberta)
pinned adult image of Helophorus species (Insects of Cedar Creek, Minnesota)
adult drawing of H. marginicollis (Mississippi State U.)
adult image of the holarctic species H. aquaticus (Invertebrates of the Baikal region, Siberia)