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

Species Dytiscus fasciventris - Understriped Diving Beetle

Predacious Diving Beetle - Dytiscus fasciventris - male unidentified beetle - Dytiscus fasciventris unidentified beetle - Dytiscus fasciventris Dytiscus - Dytiscus fasciventris - male Dytiscus - Dytiscus fasciventris - male Understriped Diving Beetle? - Dytiscus fasciventris Some kind of water beetle? - Dytiscus fasciventris Dytiscus fasciventris
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 fasciventris (Understriped Diving Beetle)
Explanation of Names
Dytiscus fasciventris Say 1824
22-28 mm(1)
only the anterior and lateral margins of pronotum are bordered by a broad pale stripe (posterior margin not bordered); lateral margin of elytron bordered by broad pale stripe on basal half only
remainder of dorsal surface brown, brownish-black, or green; ventral surface yellow to reddish except metacoxa yellow and metasternum brownish-black medially
NS-YT south in the east to IN-IL(2)
permanent ponds and marshes with sedges; found on or among aquatic plants
larvae and adults prey on fish larvae, mosquito larvae in spring, and other aquatic invertebrates
Life Cycle
overwinters as an adult in permanent waters; mates in late fall or early spring; one generation per year
Internet References