Zygonyx

Zygonyx is a genus of dragonflies in the family Libellulidae. They are commonly known as cascaders because of their preference for living beside waterfalls and flying through the spray. They lay their eggs in wet dangling roots.^[1]

Zygonyx
Zygonyx natalensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Odonata
Infraorder:	Anisoptera
Family:	Libellulidae
Subfamily:	Zygonychinae
Genus:	Zygonyx Hagen, 1867

Species

The genus contains the following species:^[2]

• Zygonyx annika Dijkstra, 2015
• Zygonyx asahinai Matsuki & Saito, 1995
• Zygonyx atritibiae Pinhey, 1964
• Zygonyx chrysobaphes (Ris, 1915)
• Zygonyx constellatus Nicolas, 2022
• Zygonyx denticulatus Dijkstra & Kipping, 2015
• Zygonyx dionyx Dijkstra & Mézière, 2015
• Zygonyx elisabethae Lieftinck, 1963
• Zygonyx eusebia (Ris, 1912)
• Zygonyx flavicosta (Sjöstedt, 1900)
• Zygonyx geminuncus Legrand, 1997
• Zygonyx hova (Rambur, 1842)
• Zygonyx ida Hagen, 1867
• Zygonyx ilia Ris, 1912
• Zygonyx immaculata Fraser, 1933
• Zygonyx iris Selys, 1869 - Emerald Cascader^[3]
• Zygonyx luctifer Selys, 1869
• Zygonyx natalensis (Martin, 1900) - Blue Cascader, Powdered Cascader,^[4] Scuffed Cascader^[5]
• Zygonyx ranavalonae Fraser, 1949
• Zygonyx regisalberti (Schouteden, 1934)
• Zygonyx speciosus (Karsch, 1891)
• Zygonyx takasago Asahina, 1966
• Zygonyx torridus (Kirby, 1889) - Ringed Cascader^[6]
• Zygonyx viridescens (Martin, 1900)

References

1. Silsby, Jill (2001). Dragonflies of the World. Csiro Publishing. p. 15. ISBN 978-0-643-10249-1.
2. Paulson, D.; Schorr, M.; Abbott, J.; Bota-Sierra, C.; Deliry, C.; Dijkstra, K.-D.; Lozano, F. (2024). "World Odonata List". OdonataCentral, University of Alabama.
3. "Emerald Cascader". Hong Kong Biodiversity Online. Retrieved 11 October 2010.
4. Clausnitzer, V.; Suhling, F.; Dijkstra, K.-D.B. (2016). "Zygonyx natalensis". IUCN Red List of Threatened Species. 2016: e.T60076A86825854. doi:10.2305/IUCN.UK.2016-3.RLTS.T60076A86825854.en. Retrieved 12 November 2021.
5. Samways, Michael J. (2008). Dragonflies and Damselflies of South Africa. Pensoft. ISBN 978-954-642-330-6.
6. Dow, R.A.; Boudot, J.-P.; Clausnitzer, V.; Suhling, F.; Ferreira, S.; Dijkstra, K.-D.B.; Schneider, W.; Samraoui, B. (2016). "Zygonyx torridus". IUCN Red List of Threatened Species. 2016: e.T60078A83877723. doi:10.2305/IUCN.UK.2016-3.RLTS.T60078A83877723.en. Retrieved 12 November 2021.