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Species Details

Dytiscus cordieri

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

SeasonalityAdults emerge from March to October. IdentificationLarge (26.3 to 32.5 mm), elongate body (Larson et al. 2000). Brown-black to black - some with green appearance. Pronotal margins and elytra broadly yellow. Large medial chevron on head. Basal antennal segments yellow, terminal segments reddish. Most of ventral surface yellow, except darker and reddish abdominal sterna, metacoxa and medial metasternum. Elongate brown-black spot along posterior margin of metacoxa. Yellow legs with reddish tibia and tarsi.

Scientific Name Dytiscus cordieri Habitat Permanent and temporary ponds (Larson et al. 2000). Associated with aquatic macrophytes. Seasonality Adults emerge from March to October. Identification
Large (26.3 to 32.5 mm), elongate body (Larson et al. 2000). Brown-black to black - some with green appearance. Pronotal margins and elytra broadly yellow. Large medial chevron on head. Basal antennal segments…
Large (26.3 to 32.5 mm), elongate body (Larson et al. 2000). Brown-black to black - some with green appearance. Pronotal margins and elytra broadly yellow. Large medial chevron on head. Basal antennal segments yellow, terminal segments reddish. Most of ventral surface yellow, except darker and reddish abdominal sterna, metacoxa and medial metasternum. Elongate brown-black spot along posterior margin of metacoxa. Yellow legs with reddish tibia and tarsi.
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, although naturally occur in low population densities throughout range (IUCN 2002, Diet Info Predatory - active swimmers (Larson et al. 2000). Invertebrate and fish larvae prey. Range In Alberta this species has been recorded from most regions. This species ranges from British Columbia to New Brunswick, and as far south as northern California, Colorado and North Carolina (Larson et al. 2000).

Citation

Page Citation for Dytiscus cordieri

Page Citation

"Species Details - Dytiscus cordieri, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4256/9-57049. Accessed 25 Dec. 2024.

References

Specimen Information

There are 27 specimens of this Species.

24 results plotted on map in 13 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM32393 - Dytiscus cordieri

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: New York, Wayne county Collected ByBall, G. E. Date Collected1947-08-13

UASM32394 - Dytiscus cordieri

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Prince Edward county Collected ByBrimley, J. F. Date Collected1922-07-29

UASM32395 - Dytiscus cordieri

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Wisconsin, Winnebago county, Oshkosh Date Collected1914-04-11

BIRD33243 - Dytiscus cordieri

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Big Knife Provincial Park Collected ByBird, C. D. Date Collected2002-05-01

UASM272874 - Dytiscus cordieri

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Plamondon Collected ByLarson, D. J.; Larson, D. N. Date Collected1970-06-08

UASM272873 - Dytiscus cordieri

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Turner Valley Collected ByLarson, D. J. Date Collected1970-05-06

Adult Seasonal Distribution