DragonflyPix

Agrion de Gené (Ischnura genei)

• English name: Island Bluetail
• German name: Insel-Pechlibelle
• French name: Agrion de Gené
• Dutch name: Tyrrheens lantaarntje
• Swedish name: N/A
• Norwegian name: N/A
• Finnish name: N/A
• Danish name: N/A
• Italian name: Codazzurra insulare
• Czech name: N/A
• Slovenian name: N/A
• Bulgarian name: N/A

Agrion de Gené (Ischnura genei)

Distribution map Ischnura genei

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. elegans, which occurs only on Corsica, Sardinia, Sicily, the Maltese islands and a few small islands off the Tuscan coast
Classification • suborder: Zygoptera (damselflies); family: Coenagrionidae
Scientific name Ischnura genei (Rambur, 1842)
Distribution • click or tap the Map button above
Notes • belongs to the elegans group, together with I. elegans, I. graellsii and I. saharensis
  • co-occurs with I. elegans on the islands of Elba and Giglio, off the Tuscan coast
  violacea and rufescens are immature female colour forms, which with age develop into one of the three mature forms: violacea (with its antehumeral stripe) into either typica or infuscans; rufescens (without an antehumeral stripe) into infuscans-obsoleta; see below for details
Habitat • any still or slow-flowing water with a rich vegetation and low acidity levels
Dimensions • typical body length: 29-32 mm; hindwing: 12-18 mm
Both sexesWings• the pterostigma in the forewing is the same size as that in the hindwing
MaleThorax• the lower side of the thorax and the antehumeral stripe (which may be narrow or even absent) are green
  ➤ the pronotum does not bear an upright projection
 Abdomen➤ the abdomen is black on top, but S8 is sky blue
 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• the side of the thorax is either green (in the form typica), purple (in the form violacea), orange/pink (in the form rufescens), or green-orange-brown (in the forms infuscans and infuscans-obsoleta)
  • the antehumeral stripe is of the same colour as the side of the thorax (see above) but is absent in the forms rufescens and infuscans-obsoleta
 Abdomen➤ the abdomen is black on top, but S8 is sky blue in the forms typica, violacea and rufescens or brown in the forms infuscans and infuscans-obsoleta; this tail-light tends to be interrupted by a black mark on either end
  • the abdomen has a vulvar spine underneath S8
 Wings• the pterostigma is uniformly beige/brown in both wings
Photographs • all of our photos below were made in Sardinia in June 2011

Males in the elegans group; pronotum
I. elegans (1), I. genei (2), I. graellsii (3), I. saharensis (4)
Note the upright projection in I. elegans; it is absent in the other species.

Ischnura genei; abdomen, female
Note: By contrast, this blue tail-light on S8 tends to be uninterrupted in I. elegans.

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

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Agrion de Gené (Ischnura genei) ⚤

1 / 20; PhotoID: Da470 04/06/2011 17:19 Italy F8 1/125 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

2 / 20; PhotoID: Da471 04/06/2011 17:27 Italy F8 1/30 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

3 / 20; PhotoID: Da472 04/06/2011 17:36 Italy F8 1/60 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

4 / 20; PhotoID: Da473 05/06/2011 07:02 Italy F8 1/50 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

5 / 20; PhotoID: Da474 05/06/2011 07:13 Italy F8 1/125 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. infuscans) ♀

6 / 20; PhotoID: Da475 05/06/2011 07:34 Italy F8 1/125 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

7 / 20; PhotoID: Da476 05/06/2011 08:03 Italy F8 1/160 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

8 / 20; PhotoID: Da477 05/06/2011 10:26 Italy F8 1/50 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. infuscans-obsoleta) ♀

9 / 20; PhotoID: Da478 05/06/2011 11:22 Italy F8 1/80 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ♂

10 / 20; PhotoID: Da479 05/06/2011 12:01 Italy F8 1/250 180mm ISO400 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ⚤

11 / 20; PhotoID: Da480 05/06/2011 12:48 Italy F8 1/250 180mm ISO400 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. violacea) ♀

12 / 20; PhotoID: Da481 05/06/2011 15:30 Italy F8 1/250 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. violacea) ♀

13 / 20; PhotoID: Da482 05/06/2011 15:30 Italy F8 1/320 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. violacea) ♀

14 / 20; PhotoID: Da483 05/06/2011 15:40 Italy F8 1/60 180mm ISO400 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. rufescens) ♀

15 / 20; PhotoID: Da484 06/06/2011 10:41 Italy F8 1/160 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ⚤

16 / 20; PhotoID: Da485 06/06/2011 11:32 Italy F8 1/200 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ⚤

17 / 20; PhotoID: Da486 06/06/2011 12:00 Italy F8 1/400 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ⚤

18 / 20; PhotoID: Da507 06/06/2011 12:08 Italy F8 1/320 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei) ⚤

19 / 20; PhotoID: Da508 06/06/2011 12:26 Italy F8 1/125 180mm ISO200 Canon7D -Crop -Flash MF
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Agrion de Gené (Ischnura genei f. typica) ♀

20 / 20; PhotoID: Da509 06/06/2011 12:50 Italy F10 1/40 180mm ISO200 Canon7D -Crop -Flash MF