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Tribe Hydaticini

Predaceous Diving Beetle - Hydaticus aruspex - male Predaceous Diving Beetle - Hydaticus aruspex - female Hydaticus aruspex - female Predaceous Diving Beetle - Hydaticus bimarginatus Dytiscid - Hydaticus aruspex Dytiscid - Hydaticus aruspex Aquatic beetle - Hydaticus bimarginatus Hydaticus bimarginatus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Dytiscidae (Predaceous Diving Beetles)
Subfamily Dytiscinae
Tribe Hydaticini
2 genera, with 4 spp. in our area and ~140 spp. worldwide(1)
8.5–20.5 mm(1)
Hydaticus is a small (7 spp.) holarctic genus, Prodaticus is a large, mostly tropical worldwide genus, with a few holarctic spp.(1)
Works Cited
1.Phylogeny and classification of the tribe Hydaticini (Coleoptera: Dytiscidae)...
Miller K.B., Bergsten J., Whiting M.F. 2009. Zoologica Scripta, 1-25.