DragonflyPix

Tundratrollslända (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

Tundratrollslända (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)
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
  • we have not yet managed to photograph a male of this species

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.

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

Somatochlora sahlbergi, thumbnail 1 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

1 / 20; PhotoID: Dr1661 27/07/2013 13:04 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 2 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

2 / 20; PhotoID: Dr1662 27/07/2013 13:05 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 3 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

3 / 20; PhotoID: Dr1663 27/07/2013 13:07 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 4 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

4 / 20; PhotoID: Dr1664 27/07/2013 13:08 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 5 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

5 / 20; PhotoID: Dr1665 27/07/2013 13:10 Finland F8 1/250 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 6 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

6 / 20; PhotoID: Dr1666 27/07/2013 13:11 Finland F8 1/500 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 7 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

7 / 20; PhotoID: Dr1667 27/07/2013 13:16 Finland F8 1/500 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 8 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

8 / 20; PhotoID: Dr1668 27/07/2013 13:16 Finland F8 1/500 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 9 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

9 / 20; PhotoID: Dr1669 27/07/2013 13:16 Finland F8 1/500 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 10 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

10 / 20; PhotoID: Dr1670 27/07/2013 13:17 Finland F8 1/500 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 11 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

11 / 20; PhotoID: Dr1671 27/07/2013 13:21 Finland F8 1/350 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 12 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

12 / 20; PhotoID: Dr1672 27/07/2013 13:21 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 13 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

13 / 20; PhotoID: Dr1673 27/07/2013 13:21 Finland F8 1/180 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 14 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

14 / 20; PhotoID: Dr1674 27/07/2013 13:22 Finland F8 1/250 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 15 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

15 / 20; PhotoID: Dr1675 27/07/2013 13:24 Finland F8 1/180 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 16 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

16 / 20; PhotoID: Dr1676 27/07/2013 13:24 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 17 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

17 / 20; PhotoID: Dr1677 27/07/2013 13:33 Finland F8 1/350 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 18 / 20
Tundratrollslända (Somatochlora sahlbergi) ♀

18 / 20; PhotoID: Dr1678 27/07/2013 13:34 Finland F8 1/125 180mm ISO400 Canon7D -Crop -Flash MF
Somatochlora sahlbergi, thumbnail 19 / 20
Tundratrollslända (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
Tundratrollslända (Somatochlora sahlbergi) ♀

20 / 20; PhotoID: Dr1680 27/07/2013 13:41 Finland F8 1/350 180mm ISO400 Canon7D -Crop -Flash MF