Anax parthenope

Lesser emperor
Male
Female
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Family: Aeshnidae
Genus: Anax
Species: A. parthenope
Binomial name
Anax parthenope
(Sélys, 1839[2])
Original genus: Aeshna

Anax parthenope,[3] the lesser emperor,[1] is a dragonfly of the family Aeshnidae. It is found in Southern Europe, north Africa, and Asia.[4][1]

Description

It is a crepuscular dragonfly, active in the dusk. This species can be easily distinguished by the multi-colored upper surface of frons and by the shape and relative lengths of the anal appendages. Its labium and labrum are golden-yellow and face and frons are greenish yellow and eyes are green, bluish when aged. Its thorax is pale olivaceous brown with dark brown sutures. Its segment two of the abdomen is turquoise blue. Segment three has a large blue patch at each side. Segments 4 to 9 have an irregular black mid-dorsal stripe. Segment 10 is black.[5]

A. parthenope showing blue S2 and S3 and green eyes

Comparison with Anax imperator

A. parthenope is smaller and less colourful than the Anax imperator. In general appearance, especially when seen on the wing, A. parthenope is similar to A. imperator but A. parthenope tends to hold its abdomen straighter than A. imperator. A large dragonfly seen in flight with a bent abdomen is most likely to be A. imperator rather than A. parthenope. A. parthenope has a blue saddle at S2 and S3 which can be seen in flight which is in contrast to the rest of the abdomen which is brown. There is a yellow rin at the base of S2. The eyes are green. It is similar to A. ephippiger although A. ephippiger is slightly smaller and slenderer and its blue saddle does not wrap around S2 but is mostly blue on top. A. ephippiger has brown eyes.

Distribution and habitat

Occurs in much of southern and central Europe including most Mediterranean islands, across Asia to Japan, Korean Peninsula and China, and north Africa. It has been found on the Canary islands and the Madeira archipelago. It is spreading north and was first seen in Great Britain in 1996 where it has since bred.[6]

Behaviour

Larva of A. parthenope

In the south of its range A. parthenope can be on the wing in March. It is most commonly seen from June to September but can still be around in November. Often seen patrolling around ponds, lakes and other still water. Where it occurs with A. imperator it is usually less abundant. When A. parthenope and A. imperator occur at the same ponds A. imperator is dominant. Male and females mate in the normal dragonfly manner and after mating the pair stay in tandem and egg-laying usually occurs whilst still in tandem. This behaviour not seen in other European hawkers with the exception of Aeshna affinis, although two migrants to Europe, A. ephippiger and A. junius also oviposit in tandem. Eggs are inserted into plants or in mud and hatch out in two months. Larval development takes two years.

References

  • Askew, R.R. (2004). The Dragonflies of Europe. (revised ed.) Harley Books. ISBN 0-946589-75-5
  • d'Aguilar, J., Dommanget, JL., and Prechac, R. (1986). A field guide to the Dragonflies of Britain, Europe and North Africa. Collins. pp. 336. ISBN 0-00-219436-8
  • Boudot JP. et al. (2009). Atlas of the Odonata of the Mediterranean and North Africa. Libellula Supplement 9:1-256.
  • Dijkstra, K-D.B & Lewington, R. (2006). Field Guide to the Dragonflies of Britain and Europe. British Wildlife Publishing. ISBN 0-9531399-4-8.
  1. 1 2 3 Mitra, A. & Clausnitzer, V (2018). "Anaciaeschna parthenope". IUCN Red List of Threatened Species. IUCN. 2018: e.T165488A72312377. Retrieved 2018-10-08.
  2. ↑ Bulletins de l'Académie royale des sciences, des lettres et des beaux-arts de Belgique, 6 (1839), 389
  3. ↑ Martin Schorr; Dennis Paulson. "World Odonata List". University of Puget Sound. Retrieved 12 Oct 2018.
  4. ↑ K.A., Subramanian; K.G., Emiliyamma; R., Babu; C., Radhakrishnan; S.S., Talmale (2018). Atlas of Odonata (Insecta) of the Western Ghats, India. Zoological Survey of India. pp. 193–194. ISBN 9788181714954.
  5. ↑ C FC Lt. Fraser (1936). The Fauna of British India, including Ceylon and Burma, Odonata Vol. III. Red Lion Court, Fleet Street, London: Taylor and Francis. pp. 152–154.
  6. ↑ "Lesser Emperor". British Dragonfly Society. Retrieved 10 August 2011.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.