Common hawker: Difference between revisions
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*[http://www.iucnredlist.org/details/165518/0 IUCN] distribution |
*[http://www.iucnredlist.org/details/165518/0 IUCN] distribution |
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[[Category:Dragonflies of Europe]] |
[[Category:Dragonflies of Europe]] |
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Revision as of 15:24, 14 February 2018
| Common Hawker | |
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| Scientific classification | |
| Kingdom: | |
| Phylum: | |
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| Genus: | |
| Species: | A. juncea
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| Binomial name | |
| Aeshna juncea | |
| Synonyms | |
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Aeshna rustica Zetterstedt, 1840 | |
The common hawker,[2] moorland hawker[1] or sedge darner[1] (Aeshna juncea) is one of the larger species of hawker dragonflies. It is native to Palearctic (from Ireland to Japan) and northern North America. The flight period is from June to early October.
It is 74 millimetres (2.9 in) long with a brown body. The male has a black abdomen with paired blue and yellow spots on each abdominal segment, and narrow stripes along the dorsal surface of the thorax. In the female, the abdomen is brown with yellow or sometimes green or blue spots. The wings of both sexes display a yellow costa (the major vein running along the leading edge of the wings). This species lacks the green thorax stripes of the southern hawker.
Female common hawkers will sometimes dive out of the sky and fake their death in order to avoid copulating with males.[3][4]
References
- ^ a b c Boudot, J.-P. (2017). "Aeshna juncea". The IUCN Red List of Threatened Species. 2017. IUCN: e.T165518A65835376. doi:10.2305/IUCN.UK.2017-3.RLTS.T165518A65835376.en. Retrieved 5 January 2018.
- ^ "Common Hawker". British Dragonfly Society. Retrieved 11 June 2011.
- ^ "Female dragonflies fake sudden death to avoid male advances". New Scientist. Retrieved 2017-09-03.
- ^ Khelifa, Rassim (2017-06-01). "Faking death to avoid male coercion: extreme sexual conflict resolution in a dragonfly". Ecology. 98 (6): 1724–1726. doi:10.1002/ecy.1781. ISSN 1939-9170.
- "Aeshna juncea". Integrated Taxonomic Information System. Retrieved 6 February 2006.
- "Aeshna juncea". DragonflyIreland. Retrieved 11 June 2011.
External links
- IUCN distribution
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