Overview

Comprehensive Description

General Description

Medium-sized to fairly large, brownish and pale blue, with a light, single stripe on side of thorax. Rocky streams in fynbos or bushy savanna.

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Distribution

Throughout much of SA up to 1500 m a.s.l. To Mediterra- nean.

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Range Description

This is one of the most common species in Africa and is widespread throughout the African continent, except in dense forests. It reaches southern Europe, the Middle East and the whole Arabian Peninsula.
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Physical Description

Diagnostic Description

Face: all light greenish grey, spectacled with fine, cream line. Labium pale yellow without dark median line. Labrum pale yellow. Vertex with small, pointed, conical peaks. Eyes: dark greyish turquoise, brownish below. Synthorax: pruinescent dull blue with no side pattern, but narrow, dark, sharply-defined, wedge-shaped, stripe on each shoulder, and showing through pruinescence. Wings: clear, becoming slightly pruinescent with age. Underside of antenodal crossveins and costa yellowish. Pterostigmas: yellowish brown and fairly long (3.7 mm). Abdomen: pruinescent blue. Female: orange-brown. Face and eyes light brown. Vertex shiny brownish black to cream at sides and at back, shallowly dimpled and with small peaks. Thorax largely pale at sides, with narrow, pointed, brown, shoulder stripe, and also a brown side stripe. Abdomen orangy brown with a very fine, mid-dorsal blackish line. Small foliations, yellowish with black margins.

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Look Alikes

In size, this rare species is similar to Orthetrum chrysostigma. General appearance is a small O. julia falsum but with paler pterostigmas. Lines on thorax are narrower and more sharply defined than in O. julia falsum. Also, labium has no central, dark marking. Secondary genitalia are very similar to O. julia falsum but a wider space between hamule and genital lobe. The yellow on the underside of the antenodal crossveins is very distinctive.

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Ecology

Habitat

Shallow, rocky streams and pools in fairly dry areas.

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Habitat and Ecology

Habitat and Ecology
The species is known from any kind of standing and slow-flowing fresh and brackish waters, except in dense rainforest areas (such as the Congo Basin).

Systems
  • Terrestrial
  • Freshwater
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Life History and Behavior

Behavior

Behaviour

Dartsswiftlyoverwater or grassy river flats, frequently returning to same perch, which may be a stem, boulder or ground.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Orthetrum chrysostigma

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 5
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Boudot, J.-P., Clausnitzer, V., Samraoui, B., Suhling, F., Dijkstra, K.-D.B. & Schneider, W.

Reviewer/s
García, N., Tognelli, M. & Suhling, F.

Contributor/s

Justification
This is a widespread species with no known major widespread threats that is unlikely to be declining fast enough to qualify for listing in a threatened category. It is therefore assessed as Least Concern.

History
  • 2006
    Least Concern
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Population

Population
This species is omnipresent almost anywhere with large populations all over its range. No decline is expected at the global scale.

Population Trend
Stable
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Threats

Major Threats
Orthetrum chrysostigma is not threatened at the global scale, although local declines may occur due to habitat destruction and water pollution.
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Management

Conservation Actions

Conservation Actions
This species does not need conservation plans or further research
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Wikipedia

Orthetrum chrysostigma

Orthetrum chrysostigma, the epaulet skimmer, is a species of dragonfly in the family Libellulidae. It is found in Algeria, Angola, Benin, Botswana, Burkina Faso, Cameroon, Central African Republic, Chad, the Democratic Republic of the Congo, Ivory Coast, Egypt, Equatorial Guinea, Ethiopia, Gambia, Ghana, Guinea, Kenya, Liberia, Libya, Malawi, Mali, Mauritania, Morocco, Mozambique, Namibia, Niger, Nigeria, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe, and possibly Burundi as well as Canary Islands and Portugal. It was recently recorded in the Maltese Islands in 2010.

Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, rivers, intermittent rivers, shrub-dominated wetlands, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, and freshwater springs. The adults prey on various flying insects, with the bodies of the males being vivid blue and those of the females a bright green color.

References[edit]

  1. ^ Boudot, J.-P.; Clausnitzer, V.; Samraoui, B.; Suhling, F.; Dijkstra, K.-D.B.; Schneider, W. (2013). "Orthetrum chrysostigma". IUCN Red List of Threatened Species. Version 2014.3. International Union for Conservation of Nature. Retrieved 2015-03-30. 
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