Species Details
Dytiscus hybridus
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults emerge from July to September.
IdentificationMedium size (24.2 to 28.1 mm), elongate body (Larson et al. 2000). Dark brown or black - some with green appearance. Small chevron between eyes. Basal antennal segments yellow, progressively darker toward tips. Pronotum with basal margin narrowly yellow or brown-black, anterior margin narrowly yellow and lateral margins broadly yellow. Yellow prosternum and prothorax, remainder of ventral surface dark red or brown-black. Forelegs yellow, femur of middle legs yellow to brown-black, hind legs brown-black.
Scientific Name
Dytiscus hybridus
Habitat
Permanent, mature ponds and marshes (Larson et al. 2000). Associated with aquatic macrophytes.
Seasonality
Adults emerge from July to September.
Identification
Medium size (24.2 to 28.1 mm), elongate body (Larson et al. 2000). Dark brown or black - some with green appearance. Small chevron between eyes. Basal antennal segments yellow, progressively darker toward tips. …
Medium size (24.2 to 28.1 mm), elongate body (Larson et al. 2000). Dark brown or black - some with green appearance. Small chevron between eyes. Basal antennal segments yellow, progressively darker toward tips. Pronotum with basal margin narrowly yellow or brown-black, anterior margin narrowly yellow and lateral margins broadly yellow. Yellow prosternum and prothorax, remainder of ventral surface dark red or brown-black. Forelegs yellow, femur of middle legs yellow to brown-black, hind legs brown-black.
Life History
Overwinter as adults in water or on land (Larson et al. 2000). Late fall or early spring mating. Univoltine (Aiken and Wilkinson 1985). Strong swimmers, hind legs move together while swimming. Adults attracted to lights.
Conservation
No special status (IUCN 2002).
Diet Info
Predatory - active swimmers (Larson et al. 2000). Invertebrate and fish larvae prey.
Range
Southern Alberta to southern Quebec, as far south as North Carolina and Nebraska (Larson et al. 2000). Some records from Oregon, Wyoming and Colorado.
Citation
Page Citation for Dytiscus hybridus
Page Citation
"Species Details - Dytiscus hybridus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4252. Accessed 25 Apr. 2024.
References
Title
2002 IUCN Red List of Threatened Species.
Publication Date
2002
Series Title
Ecology
Author
Aiken, R. B. and C. W. Wilkinson
Title
Bionomics of Dytiscus alaskanus J. Balfour-Browne (Coleoptera: Dytiscidae) in a Central Alberta Lake.
Publication Date
1985
Series Title
Canadian Journal of Zoology
Volume
63
Pages
1316-1323
Author
Larson, D. J.; Alaire, Y. and R. E. Roughley
Title
Predaceous Diving Beetles (Coleoptera: Dytiscidae) of the Nearctic Region, with emphasis on the fauna of Canada and Alaska.
Publication Date
2000
Pages
982
Specimen Information
There are 5 specimens of this Species.
UASM32368 - Dytiscus hybridus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Virginia, City of Fredericksburg, Fredericksburg
Date Collected1920-04-03
UASM32369 - Dytiscus hybridus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New Jersey, Monmouth county, Lahaway
Collected ByAugell, J. W.
Date Collected1919-08-15
UASM32370 - Dytiscus hybridus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New Jersey, Monmouth county, Lahaway
Collected ByAugell, J. W.
Date Collected1920-08-19
UASM32371 - Dytiscus hybridus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: New York, Tompkins county, Ithaca
Collected ByFranclemont, J. G.
Date Collected1947-08-08
UASM272869 - Dytiscus hybridus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Medicine Hat
Collected ByCarr, F. S.
Date Collected1923-09-29