Tag Archives: Aeshnidae

Adversaeschna brevistyla (Rambur)

Blue-spotted Hawker (Adversaeschna brevistyla)

The Blue-spotted Hawker was described in the year 1842, it is the only member of its genus.

The species is widespread across Australia, New Zealand and the Norfolk Islands, here it prefers relatively large lakes and other standing water with tall bankside vegetation, but is often found far from water.

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adversaeschna-brevistyla-nzn

Depiction from: ‘G. V. Hudson: New Zealand Neuroptera: A popular Introduction to the Life Histories and Habits of May Flies, Dragon Flies, Caddis Flies and allied Insects inhabiting New Zealand, including Notes on their relation to Angling. London: West, Newman & Co. 1904′

http://www.biodiversitylibrary.org

Gynacantha stevensoni Fraser

Stevenson’s Duskhawker (Gynacantha stevensoni)

Stevenson’s Duskhawker is known only from the type specimen, a male that was collected in the year 1925 on the island of Tongatapu in Tonga.

The type locality is sometimes erroneously given as Samoa (for example in the IUCN ‘Red List’), but the species probably occurs on the Fijian Islands (The ‘Smithsonian Institution’ lists at least two specimens of this species from Viti Levu / Fiji.).

The biology of this species is unknown so far.

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The insect fauna of the Tongan Islands has been insufficiently studied so far, and the status of many species is completely unknown.

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gynacantha-stevensoni-tnhm

Photo: The Trustees of the Natural History Museum, London

(under creative commons license (4.0))
http://creativecommons.org/licenses/by/4.0

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edited: 23.02.2017

Anaciaeschna jaspidea (Burmeister)

Rusty Darner (Anaciaeschna jaspidea)

Distribution:

Austral Islands: Rurutu, Tubuai
Cook Islands: Rarotonga
Fiji:
Samoa: Savai’i, ‘Upolu
Society Islands: Huahine, Mo’orea, Ra’iatea, Taha’a, Tahiti

local names: –

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This is a quite large dragonfly, reaching a wingspan of about 9 cm.  

It is indigenous from India to Australia and beyond to the eastern part of Central Polynesia, where it can be found from the Cook Islands to the Austral – and Society Islands.  

The Rusty Darner is not as colourful as other species and can be identified in the field by its extremely large head, which again seems to be made almost completely of the two giant eyes alone.  

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References:  

[1] Karin S. Kami; Scott E. Miller: Samoan Insects and related Arthropods: Checklist and Bibliography. Bishop Museum Technical Report 13. 1998 
[2] Milen Marinov; Warren Chin; Eric Edwards; Brian Patrick; Hamish Patrick: A revised and updated Odonata checklist of Samoa (Insecta: Odonata). Faunistic Studies in South-East Asian and Pacific Island Odonata 5: 1-21. 2013
[3] Milen Marinov; Frederic A. Jacq; Thibault Ramage; Crile Doscher: Contribution to the Odonata fauna of the Society Islands, French Polynesia (Insecta: Odonata). Journal of the International Dragonfly Fund 28: 1-37. 2019

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Photo: Haomiao Zhang; by courtesy of Haomiao Zhang

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edited: 27.09.2019