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| Springtime darner Temporal range:
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|---|---|
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Odonata |
| Infraorder: | Anisoptera |
| Family: | Aeshnidae |
| Genus: | Basiaeschna Sélys, 1883 |
| Species: | B. janata
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| Binomial name | |
| Basiaeschna janata (Say, 1840)
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Basiaeschna janata, the springtime darner,[1] is a species of dragonfly in the monotypic genus Basiaeshna in the family Aeshnidae.[2] It is a small, bluish darner that flies early in the year.[1]
A fossil species, †Basiaeschna alaskaensis Garrouste & Nel, 2019 is known from the Chickaloon Formation of Alaska, around the time of the Paleocene-Eocene Thermal Maximum. It is the only definitive fossil member of this genus, and its presence in Alaska suggests that the ancestral Basiaeschna likely migrated from Eurasia to North America across Beringia. Two other fossil darner previously placed in this genus have been transferred into the extinct genus †Oligaeschna.[3]
References
[edit]- ^ a b Giff Beaton (2007). Dragonflies and Damselflies of Georgia and the Southeast. Athens, GA: University of Georgia Press. ISBN 978-0-8203-2795-2.
- ^ Martin Schorr, Martin Lindeboom & Dennis Paulson. "World Odonata List". University of Puget Sound. Archived from the original on 28 August 2010. Retrieved 11 August 2010.
- ^ Garrouste, Romain; Nel, André (2019-11-17). "Alaskan Palaeogene insects: a challenge for a better knowledge of the Beringian 'route' (Odonata: Aeshnidae, Dysagrionidae)". Journal of Systematic Palaeontology. 17 (22): 1939–1946. doi:10.1080/14772019.2019.1572235. ISSN 1477-2019.
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