DragonflyPix

Bog Hawker (Aeshna subarctica)

[ Show Info• Scientific name: Aeshna subarctica Walker, 1908
• English name: Bog Hawker
• German name: Hochmoor-Mosaikjungfer
• French name: Aeschne subarctique
• Dutch name: Noordse glazenmaker
• Swedish name: Gungflymosaikslända
• Norwegian name: Torvmoseøyenstikker
• Finnish name: Suoukonkorento
• Danish name: Højmose-mosaikguldsmed
• Italian name: Dragone artico
• Czech name: šídlo rašelinné
• Slovenian name: Mahovna deva
• Bulgarian name: Торфен пъстролет
• Typical length: 70-76 mm
• Hindwing: 39-46 mm
] | [ Show MapDistribution mapBog Hawker (Aeshna subarctica)
Map data based on Kalkman, V. J. & J.-P. Boudot (eds.), Atlas of the Dragonflies of Europe (in prep.)
]

The Bog Hawker (Aeshna subarctica) looks very similar indeed to the much more widespread Moorland Hawker (Aeshna juncea). It may tend to be slightly the smaller of the two species, its colouration may typically be a bit paler, and its costa (that is, the leading edge of the wing) may tend to be brown rather than yellow, but none of these differences are 100% reliable or very useful in the field. Much more diagnostic, if you're lucky enough to get a close-up, are the absence of a yellow spot right behind the eye (i.e. Aeshna juncea nearly always has such a yellow spot while A. subarctica doesn't), and the width of the line which runs across the face, which narrows at the base in A. juncea but not in A. subarctica. Aeshna subarctica has a limited range and only occurs in bogs and moorlands in the North-East of Europe and in similar habitats at altitude in Central Europe. Our only photographs of the species to date were made in moorland areas in the South of Germany and in Finland and show ovipositing females laying their eggs - typically - on floating peat moss. [Update: in August 2011 we managed to photograph a few males of this species, mostly in flight, at a lake in Northern Italy (where the species was first discovered only recently).]

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PhotoID: Dr1249 25/08/2009 11:52 Germany F5.6 1/125 180mm ISO200 Canon50D -Crop -Flash MF
PhotoID: Dr1250 25/08/2009 11:53 Germany F5.6 1/160 180mm ISO200 Canon50D -Crop -Flash MF
PhotoID: Dr1251 25/08/2009 11:56 Germany F5.6 1/400 180mm ISO200 Canon50D -Crop -Flash MF
PhotoID: Dr1252 25/08/2009 11:57 Germany F5.6 1/200 180mm ISO200 Canon50D -Crop -Flash MF
PhotoID: Dr1253 24/07/2012 09:19 Finland F8 1/400 180mm ISO200 Canon7D -Crop -Flash MF
PhotoID: Dr1439 16/07/2010 13:47 Finland F8 1/250 180mm ISO200 Canon7D -Crop -Flash MF
PhotoID: Dr1440 16/07/2010 13:48 Finland F8 1/80 180mm ISO200 Canon7D -Crop -Flash MF
PhotoID: Dr1441 16/07/2010 13:48 Finland F8 1/60 180mm ISO200 Canon7D -Crop -Flash MF
PhotoID: Dr1442 19/08/2011 14:59 Italy F8 1/400 180mm ISO400 Canon7D -Crop -Flash MF
PhotoID: Dr1601 17/08/2011 13:39 Italy F8 1/800 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1602 17/08/2011 13:39 Italy F8 1/640 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1603 18/08/2011 10:40 Italy F8 1/640 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1604 18/08/2011 11:07 Italy F8 1/800 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1605 18/08/2011 11:08 Italy F8 1/1000 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1606 18/08/2011 11:20 Italy F8 1/100 180mm ISO400 Canon7D -Crop -Flash MF
PhotoID: Dr1607 18/08/2011 12:40 Italy F8 1/500 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1608 18/08/2011 12:47 Italy F6.3 1/2000 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1609 18/08/2011 12:50 Italy F6.3 1/1000 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1610 18/08/2011 12:54 Italy F6.3 1/1250 180mm ISO400 Canon7D +Crop -Flash MF
PhotoID: Dr1611 18/08/2011 14:14 Italy F8 1/1000 180mm ISO400 Canon7D -Crop -Flash MF