Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


Species Dytiscus verticalis - Vertical Diving Beetle

Predaceous Diving Beetle - Dytiscus verticalis - male dytiscid - unident - Dytiscus verticalis Dytiscus verticalis? - Dytiscus verticalis Dytiscus verticalis? - Dytiscus verticalis Dytiscus verticalis ? - Dytiscus verticalis - male Some type of Water Scavanger Beetle? maybe Cybister fimbriolatus? - Dytiscus verticalis - female Predaceous Divng Beetle - Dytiscus verticalis - female A species of Predaceous Diving Beetle (Dytiscus sp.)? - Dytiscus verticalis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Dytiscidae (Predaceous Diving Beetles)
Subfamily Dytiscinae
Genus Dytiscus
Species verticalis (Vertical Diving Beetle)
Explanation of Names
Dytiscus verticalis Say, 1823
adult body length 33-38 mm
larva to about 50 mm
Adult: pronotum with yellow border on lateral margins only; yellow lateral margin of elytra continues as an oblique line across apex; two tibial spurs on hindleg are approximately equal in size
ne NA - northeastern United States and southeastern Canada from Nova Scotia to Saskatchewan
permanent or temporary freshwater ponds and pools
adults from March to November
larvae and adults prey on fish larvae, mosquito larvae, other aquatic invertebrates, and sometimes tadpoles and salamanders
Life Cycle
one generation per year; overwinters as an adult in permanent waters
North Carolina State U. has 7 specimens in their collection but none were collected in North Carolina.
Florida State Collection of Arthropods list of Dytiscidae has no Dytiscus species.
Oklahoma State University has 2 D. verticalis specimens in their collection but there is no indication that the specimens were collected in Oklahoma.
See Also
other Dystiscus species have a yellow band across the anterior - and usually posterior - margin of the pronotum (see images of 9 species at U. of Alberta)
Cybister fimbriolatus lacks oblique yellow line across apex of elytra, and the outer tibial spur on the hindleg is larger and broader than the inner spur (whereas in Dytiscus species, both spurs are about equal in size)
Internet References
live adult image and other info (U. of Michigan)
common name reference and other info (
distribution in Canada; PDF doc list of provinces (D.J. Larson and R.E. Roughley, Checklist of Beetles of Canada and Alaska)
presence in Saskatchewan; list (U. of Saskatchewan)