DragonflyPix

Toendraglanslibel (Somatochlora sahlbergi)

• English name: Treeline Emerald
• German name: Polar-Smaragdlibelle
• French name: N/A
• Dutch name: Toendraglanslibel
• Swedish name: Tundratrollslända
• Norwegian name: Nordlig metalløyenstikker
• Finnish name: Tundrakiiltokorento
• Danish name: Tundra-smaragdlibel
• Italian name: N/A
• Czech name: N/A
• Slovenian name: N/A
• Bulgarian name: N/A

Toendraglanslibel (Somatochlora sahlbergi)

Distribution map Somatochlora sahlbergi

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


General • a very dark, metallic-green species of the far North
Classification • suborder: Anisoptera (dragonflies); family: Corduliidae
Scientific name Somatochlora sahlbergi Trybom, 1889
Distribution • click or tap the Map button above
Notes ➤ smaller and noticeably darker than Somatochlora metallica
  • very similar to S. alpestris with which it co-occurs
  • cordulids are 'fliers': they spend a lot of time on the wing and seldom hang up for a rest
  • seems to be active only in sunny weather
Habitat • deep bog pools and lakes on the tundra
Dimensions • typical body length: 48-50 mm; hindwing: 30-33 mm
Both sexesHead• the eyes are green (brown in immature animals)
 Abdomen• S3 bears a narrow white ring on either end; the lower ring may be (partly) obscured
  • S4-S10 are uniformly black (or very dark green)
 Wings➤ there is a single cubito-anal crossvein in the forewing (as opposed to the, unusual, two crossveins in S. alpestris)
  • the pterostigma is relatively light-coloured
MaleAbdomen➤ the upper appendages are single-angled
FemaleAbdomen• there are no yellow spots on the abdomen
  • compated to S. arctica the abdomen is short and thickset
  ➤ the vulvar scale is elongate and tapered in shape
Photographs • all of our photos below were made in Northern Finland

Somatochlora sahlbergi (left) and S. alpestris (right)
In S. sahlbergi (and all other European species of the genus) the forewing has one cubito-anal crossvein; in S. alpestris it has two.

Somatochlora alpestris (left) and S. sahlbergi (right)
In S. sahlbergi the vulvar scale is elongated in shape; in S. alpestris it is triangular in shape.

Somatochlora alpestris (left) and S. sahlbergi (right)
In S. sahlbergi the appendages are single-angled; in S. alpestris they are double-angled.

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

Somatochlora sahlbergi, thumbnail 1 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

1 / 20; PhotoID: Dr1661 18/07/2018 10:08 Finland F8 1/500 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 2 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

2 / 20; PhotoID: Dr1662 19/07/2018 08:24 Finland F8 1/200 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 3 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

3 / 20; PhotoID: Dr1663 19/07/2018 08:41 Finland F8 1/200 180mm ISO200 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 4 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

4 / 20; PhotoID: Dr1664 19/07/2018 09:10 Finland F8 1/320 180mm ISO200 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 5 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

5 / 20; PhotoID: Dr1665 19/07/2018 09:14 Finland F8 1/640 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 6 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

6 / 20; PhotoID: Dr1666 19/07/2018 09:26 Finland F8 1/200 180mm ISO200 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 7 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

7 / 20; PhotoID: Dr1667 19/07/2018 12:56 Finland F8 1/320 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 8 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

8 / 20; PhotoID: Dr1668 19/07/2018 16:07 Finland F8 1/320 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 9 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

9 / 20; PhotoID: Dr1669 20/07/2018 10:33 Finland F8 1/250 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 10 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

10 / 20; PhotoID: Dr1670 20/07/2018 14:51 Finland F8 1/200 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 11 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

11 / 20; PhotoID: Dr1671 20/07/2018 14:56 Finland F8 1/320 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 12 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

12 / 20; PhotoID: Dr1672 21/07/2018 11:21 Finland F8 1/320 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 13 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

13 / 20; PhotoID: Dr1673 21/07/2018 11:28 Finland F10 1/250 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 14 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

14 / 20; PhotoID: Dr1674 21/07/2018 12:50 Finland F8 1/320 180mm ISO200 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 15 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

15 / 20; PhotoID: Dr1675 21/07/2018 14:58 Finland F8 1/200 180mm ISO200 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 16 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♂

16 / 20; PhotoID: Dr1676 21/07/2018 15:09 Finland F8 1/160 180mm ISO200 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 17 / 20
Toendraglanslibel (Somatochlora sahlbergi) ⚤

17 / 20; PhotoID: Dr1677 21/07/2018 16:25 Finland F8 1/200 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 18 / 20
Toendraglanslibel (Somatochlora sahlbergi) ⚤

18 / 20; PhotoID: Dr1678 21/07/2018 16:28 Finland F8 1/250 180mm ISO400 Canon7D2 -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 19 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

19 / 20; PhotoID: Dr1679 27/07/2013 13:40 Finland F8 1/350 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 20 / 20
Toendraglanslibel (Somatochlora sahlbergi) ♀

20 / 20; PhotoID: Dr1680 21/07/2018 16:33 Finland F8 1/400 180mm ISO400 Canon7D2 -Crop -Flash MF