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Species Details

Dytiscus hatchi

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

SeasonalityAdults emerge from July to September. IdentificationSmall (22.1 to 28.5 mm), oval-shaped (Larson et al. 2000). Brown to brown-black - some with green appearance. Median chevron on head. Basal antennal segments yellow, terminal segments darker. Lateral and anterior pronotal margins broadly yellow, basal margin narrowly yellow, expanded medial yellow border. Yellow to reddish ventral surface, except metacoxa yellow and metasternum medially brown-black. Apical and basal margins of abdominal sterna brown-black. Legs yellow with darker tarsi and tibia.
Scientific Name Dytiscus hatchi Habitat Beaver ponds (Larson et al. 2000); ponds in forested areas; associated with aquatic macrophytes. Seasonality Adults emerge from July to September. Identification
Small (22.1 to 28.5 mm), oval-shaped (Larson et al. 2000). Brown to brown-black - some with green appearance. Median chevron on head. Basal antennal segments yellow, terminal segments darker. Lateral and anterior…
Small (22.1 to 28.5 mm), oval-shaped (Larson et al. 2000). Brown to brown-black - some with green appearance. Median chevron on head. Basal antennal segments yellow, terminal segments darker. Lateral and anterior pronotal margins broadly yellow, basal margin narrowly yellow, expanded medial yellow border. Yellow to reddish ventral surface, except metacoxa yellow and metasternum medially brown-black. Apical and basal margins of abdominal sterna brown-black. Legs yellow with darker tarsi and tibia.
Life History Overwinter as adults in permanent waters (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 or fish larvae prey. Range This species has not been recorded in Alberta. All records are from west of the Rocky Mountains (Larson et al. 2000); northern British Columbia to Southern California.

Citation

Page Citation for Dytiscus hatchi

Page Citation

"Species Details - Dytiscus hatchi, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4255. Accessed 23 Apr. 2024.

Authorship

Name Edgar, M.
Role species page author
Date 2003

References

Specimen Information

There is 1 specimen of this Species.

1 result plotted on map in 1 marker.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM32366 - Dytiscus hatchi

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Lake Cowichan Collected ByCarr, F. S. Date Collected1928-07-29

Adult Seasonal Distribution