DragonflyPix

Ischnura senegalensis

• English name: Marsh Bluetail
• German name: Senegal-Pechlibelle
• French name: N/A
• Dutch name: Senegalees lantaarntje
• Swedish name: N/A
• Norwegian name: N/A
• Finnish name: N/A
• Danish name: N/A
• Italian name: N/A
• Czech name: N/A
• Slovenian name: N/A
• Bulgarian name: N/A

Ischnura senegalensis

Distribution map Ischnura senegalensis

Map data based on J.-P. Boudot & V. J. Kalkman (eds.),
Atlas of the European Dragonflies and Damselflies


General ➤ a small species, very similar to I. pumilio, which in Europe occurs only on the Canary Islands
Classification • suborder: Zygoptera (damselflies); family: Coenagrionidae
Scientific name Ischnura senegalensis (Rambur, 1842)
Distribution • click or tap the Map button above
Notes • over the years there has been much debate about the presence or otherwise of Ischnura senegalensis on the Canary Islands (and therefore in Europe); as recently as 2008 and 2011 photographs of the species taken on Tenerife were initially misidentified as I. saharensis - an understandable mistake, considering I. senegalensis didn't occur on the official checklists whereas I. saharensis did and was in fact considered the only damselfly species present on the island
  • in May 2014 we managed to demonstrate that I. senegalensis does occur and reproduce on the Canary Islands
Habitat • any well-vegetated pond or lake
Dimensions • typical body length: 29-37 mm; hindwing: 14-22 mm
MaleThorax• the lower side of the thorax and the antehumeral stripe are sky blue or (pale) green
  • compared to I. saharensis the black line on the interpleural suture tends to be much thinner, shorter and less clearly visible
 Abdomen• the abdomen is black on top, but S8 is sky blue
  ➤ the black upper part of S2 is separated from the sky blue or green lower part in a wavy bulge
  • compared to I. saharensis the tubercle on S10 is much smaller and less clearly visible
 Wings• the pterostigma in the forewing is bicoloured: black on the inside, white on the outside; the pterostigma in the hindwing is uniformly beige/brown
FemaleThorax• in immature females the side of the thorax is bright orange (a colour form known as aurantiaca); with age this orange colour is gradually replaced by green
  • in androchrome females (which we have not yet photographed) the side of the thorax is sky blue or (pale) green
 Abdomen➤ the abdomen is black on top, without a tail-light on S8
  • the abdomen has a vulvar spine underneath S8
 Wings• the pterostigma is uniformly brown in both wings
Photographs • all of our photos below were made on the Canary Islands in May 2014

Ischnura saharensis (left) and I. senegalensis (right); thorax, male
Note: in I. saharensis the black line on the interpleural suture is much thicker and longer.

Ischnura saharensis (left) and I. senegalensis (right); abdomen, male
Note: in I. saharensis the green and black portions of S2 are separated in a straight line.

Ischnura saharensis (left) and I. senegalensis (right); abdomen, male
Note: in I. saharensis the tubercle on S10 is much larger.

Ischnura saharensis (left, centre) and I. senegalensis (right); abdomen, female
Note: in I. saharensis S8 is either blue or brown on top; in the gynochrome form of I. senegalensis it is black.

Click on a thumbnail to display the photograph (at 1200 x 800 pixels) in a new window.

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis f. aurantiaca

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis f. aurantiaca

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Ischnura senegalensis f. aurantiaca

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis

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Ischnura senegalensis f. aurantiaca

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