Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Hydroporus

Hydroporus mannerheimi Hydroporus sp.? - Hydroporus niger Hydroporus dentellus - male Hydroporus dichrous - male Hydroporus dichrous - male water beetle - Hydroporus Hydroporus mannerheimi - male Hydroporus pervicinus (Fall) - Hydroporus pervicinus - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Dytiscidae (Predaceous Diving Beetles)
Subfamily Hydroporinae
Tribe Hydroporini
Subtribe Hydroporina
Genus Hydroporus
Explanation of Names
Hydroporus Clairville, 1806
Numbers
~55 spp. in our area, ~190 total(1)
As of 2021 genus is paraphyletic
Size
2.6-7.1 mm(2)
Identification
Adults:
epipleuron with no carina at the humeral angle (separates from Hygrotus)
metacoxal lobes not incised medially; hind (posterior) margins of metacoxal lobes generally straight or slightly angled medially (2)
colouration generally dark on the elytra and ventral surface; some with pale markings on the dorsal surface
Range
holarctic(1)
Habitat
lentic; usually at the shallow margins of ponds and other bodies of standing water; among emergent vegetation