Species Details

Coenagrion resolutum

Freshwater Invertebrate Collection Read more about this collection »

Common NameTaiga bluet SeasonalityAdults fly late-May to mid-August depending on the location. IdentificationThe taiga bluet has pale blue to almost turquoise colouration (Westfall and May 1996). It is similar in size and proportions to the subarctic bluet (C. interrogatum) but has different colour patterns and markings (Walker 1953). Males do not have a black mark on the underside of the thorax like that which is found on the subarctic bluet (Westfall and May 1996). On each side of the top of the thorax are narrow blue stripes (appear to be on their shoulders) that are sometimes broken and resemble an exclamation mark. These shoulder strips are narrower than the black strips below and come to point above the dot in the exclamation mark (Westfall and May 1996). Abdominal segments are mostly pale blue on top and yellowish-green on bottom with distinctive markings: segments 1 and 2 have narrow dark rings; segment 2 has a black U-shape on top with arms of the U on each side of the segment; segments 3 and 4 segments are blue at the end; half of segment 5 and segments 6 and 7 form one large black ring; segments 8 and 9 are blue and the terminal segment is black (Walker 1953, Cannings 2002, Acorn 2004). Female taiga bluets can be coloured like the males or yellow-green to brownish (Walker 1953). Females do not have a black mark on the underside of the thorax. Most of the abdomen is dark with pale rings, some in the mid-abdomen are interrupted, more prominent on the terminal segments (Walker 1953, Westfall and May 1996, Acorn 2004). ). Taiga bluets are small to medium damselflies that can be just over 3 cm in length. Larvae of the taiga bluet are difficult to distinguish from the other Eurasian bluets (C. angulatum and C. interrogatum) or even American bluets (genus Enallagma) or forktails (genus Ischnura). The taiga bluet has no obvious characters that allows for identification in the field; two published keys use very finely detailed characters (Baker and Clifford 1980, Canning and Canning 1980). Coenagrion larvae are of average stature with the posterior margin of the head rounded and eyes not very prominent (Walker 1953).

Scientific Name Coenagrion resolutum Common Name Taiga bluet Seasonality Adults fly late-May to mid-August depending on the location. Identification
The taiga bluet has pale blue to almost turquoise colouration (Westfall and May 1996). It is similar in size and proportions to the subarctic bluet (C. interrogatum) but has different colour patterns and markings…
The taiga bluet has pale blue to almost turquoise colouration (Westfall and May 1996). It is similar in size and proportions to the subarctic bluet (C. interrogatum) but has different colour patterns and markings (Walker 1953). Males do not have a black mark on the underside of the thorax like that which is found on the subarctic bluet (Westfall and May 1996). On each side of the top of the thorax are narrow blue stripes (appear to be on their shoulders) that are sometimes broken and resemble an exclamation mark. These shoulder strips are narrower than the black strips below and come to point above the dot in the exclamation mark (Westfall and May 1996). Abdominal segments are mostly pale blue on top and yellowish-green on bottom with distinctive markings: segments 1 and 2 have narrow dark rings; segment 2 has a black U-shape on top with arms of the U on each side of the segment; segments 3 and 4 segments are blue at the end; half of segment 5 and segments 6 and 7 form one large black ring; segments 8 and 9 are blue and the terminal segment is black (Walker 1953, Cannings 2002, Acorn 2004). Female taiga bluets can be coloured like the males or yellow-green to brownish (Walker 1953). Females do not have a black mark on the underside of the thorax. Most of the abdomen is dark with pale rings, some in the mid-abdomen are interrupted, more prominent on the terminal segments (Walker 1953, Westfall and May 1996, Acorn 2004). ). Taiga bluets are small to medium damselflies that can be just over 3 cm in length. Larvae of the taiga bluet are difficult to distinguish from the other Eurasian bluets (C. angulatum and C. interrogatum) or even American bluets (genus Enallagma) or forktails (genus Ischnura). The taiga bluet has no obvious characters that allows for identification in the field; two published keys use very finely detailed characters (Baker and Clifford 1980, Canning and Canning 1980). Coenagrion larvae are of average stature with the posterior margin of the head rounded and eyes not very prominent (Walker 1953).
Life History
Sawchyn and Gillott (1975) performed a detailed study on the biology of taiga bluets in Saskatchewan. Females lay soft, creamy-white eggs during June and July in cuts made in living, aquatic plant tissue. Embryonic…
Sawchyn and Gillott (1975) performed a detailed study on the biology of taiga bluets in Saskatchewan. Females lay soft, creamy-white eggs during June and July in cuts made in living, aquatic plant tissue. Embryonic development takes 2 to 3 weeks. Larvae develop rapidly and near completion by October. Baker (1981) reported that taiga bluet larvae have a hierarchy of dominance where they aggressively defend preferable feeding sites They over-winter in one of the final three stages (instars) of development, frozen in the ice that forms in their shallow habitat. The larvae intentionally place themselves where they become embedded in the ice but do not freeze. The larvae remain dormant until April when the ice melts and then continues development. Larvae leave the water to become adults by mid-June. This adaptation may not be necessary in the southern part of the range. Newly emerged adults disperse from the larval habitat to feed and mature. Maturation requires about 1 week and mating occurs away from the water, oviposition occurs within 2 weeks of adult emergence. Oviposition occurs with the male still attached to the female. Eggs are always deposited above the water surface on floating or emergent vegetation. Baker and Clifford (1981) reported that taiga bluets can take two years to complete their life cycle as opposed to the one observed by Sawchyn and Gillott (1975).
Conservation Not currently a concern. The taiga bluet is one of the most common damselfly species in Canada. Diet Info Adults feed on flies (e.g. midges) (Sawchyn and Gillott 1975). Larval diet consists of fly larvae, water fleas, other odonate larvae and assorted invertebrates (Baker and Clifford 1981). Range
Found coast-to-coast throughout most of Canada and the northern United States. Records from as far north as Alaska and south to Arizona. It is one of the most widely distributed damselfly species in North America and…
Found coast-to-coast throughout most of Canada and the northern United States. Records from as far north as Alaska and south to Arizona. It is one of the most widely distributed damselfly species in North America and the most northerly along with the subarctic bluet (C. interrogatum).

Citation

Page Citation for Coenagrion resolutum

Page Citation

"Coenagrion resolutum, Freshwater Invertebrate Collection." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/5-5858. Accessed 23 May. 2022.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Odonata Suborder Zygoptera Family Coenagrionidae Genus Coenagrion Species Coenagrion resolutum
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for Freshwater Invertebrate Collection

Disclaimer
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Authorship

Name Jones, B. C.
Role species page author
Date 2005

References

Specimen Information

There are 25 specimens of this Species.

25 results plotted on map in 8 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

IN843 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-07-14

IN844 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Sherwood Park Collected ByBaker, R. L. Date Collected1978-06-26

IN846 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cold Lake (Undet.) Collected ByBaker, R. L. Date Collected1979-07-04

IN847 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cold Lake (Undet.) Collected ByBaker, R. L. Date Collected1979-07-04

IN848 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cold Lake (Undet.) Collected ByBaker, R. L. Date Collected1979-07-04

IN849 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cold Lake (Undet.) Collected ByBaker, R. L. Date Collected1979-07-04

IN850 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Bigoray River Collected ByBaker, R. L. Date Collected1979-07-25

IN851 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Wabamun Lake Collected BySoluk, D. A.

IN852 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-06-12

IN853 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-06-12

IN854 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Edmonton Collected ByBaker, R. L. Date Collected1978-07-02

IN855 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-07-05

IN856 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Edmonton Collected ByBaker, R. L. Date Collected1978-07-16

IN857 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1979-06-26

IN858 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Beaver Crossing Collected ByBaker, R. L. Date Collected1979-07-04

IN859 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1980-05-28

IN860 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Edmonton Collected ByBaker, R. L. Date Collected1980-06-15

IN1546 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-07-14

IN1547 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1979-07-25

IN1548 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1979-07-25

IN1562 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-07-05

IN1563 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-06-12

IN1564 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1979-07-10

IN1565 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Cynthia Collected ByBaker, R. L. Date Collected1978-07-14

IN1566 - Coenagrion resolutum

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Hwy. 21 Collected ByBaker, R. L. Date Collected1979-06-28