Species Details

Lestes dryas

Freshwater Invertebrate Collection Read more about this collection »

Common NameEmerald Spreadwing; Scarce Emerald Damselfly SeasonalityEarly summer, mid-June to late August (Walker). IdentificationThe only Lestes in Alberta with bright metallic green upperparts. Male: 36-38 mm long. Metallic green on upper thorax, humeral stripe very thin or absent. Inferior appendages very broad at the tips in lateral view. Pruinosity develops with age to cover the pronotum, parts of the thorax, and segments 8-10. Female: 27-29 mm long. Metallic green above, humeral stripe thin, green of the mesepimeron extending onto the mesinfraepisternum. Does not develop pruinosity. (Walker)

Scientific Name Lestes dryas Common Name Emerald Spreadwing; Scarce Emerald Damselfly Seasonality Early summer, mid-June to late August (Walker). Identification
The only Lestes in Alberta with bright metallic green upperparts. Male: 36-38 mm long. Metallic green on upper thorax, humeral stripe very thin or absent. Inferior appendages very broad at the tips in lateral view.…
The only Lestes in Alberta with bright metallic green upperparts. Male: 36-38 mm long. Metallic green on upper thorax, humeral stripe very thin or absent. Inferior appendages very broad at the tips in lateral view. Pruinosity develops with age to cover the pronotum, parts of the thorax, and segments 8-10. Female: 27-29 mm long. Metallic green above, humeral stripe thin, green of the mesepimeron extending onto the mesinfraepisternum. Does not develop pruinosity. (Walker)
Life History
Known to exhibit facultative diapause under some conditions (possibly low water levels or cool temperatures) (Corbet). Oviposits in tandem high above the water line in aquatic vegetation. Known to cause damage or…
Known to exhibit facultative diapause under some conditions (possibly low water levels or cool temperatures) (Corbet). Oviposits in tandem high above the water line in aquatic vegetation. Known to cause damage or death to Iris versicolor when ovipositing in large numbers. (Walker).
Conservation Relatively common throughout Alberta North America (Walker). In Europe, it is an endangered species (Moore). Diet Info Gleans small invertebrates from the foliage. The nymphs prey on aquatic invertebrates. Range Found throughout Alberta. It is known from in all provinces and territories Canada, except Newfoundland and Labrador. It is also widespread in the U.S.A.

Citation

Page Citation for Lestes dryas

Page Citation

"Lestes dryas, Freshwater Invertebrate Collection." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/5-6148. Accessed 22 May. 2022.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Odonata Suborder Zygoptera Family Lestidae Genus Lestes Species Lestes dryas
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 Bromilow, S.
Role species page author
Date 2002

Specimen Information

There are 4 specimens of this Species.

4 results plotted on map in 4 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

IN883 - Lestes dryas

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Ardrossan Collected ByDaborn, G. Date Collected1968-07-12

IN884 - Lestes dryas

Freshwater Invertebrate Collection

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

IN885 - Lestes dryas

Freshwater Invertebrate Collection

Place CollectedCanada: Alberta, Edmonton Collected ByBaker, R. L. Date Collected1979-07-21

IN1560 - Lestes dryas

Freshwater Invertebrate Collection

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