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Flora & Fauna (media)
Bog Hawker
(Aeshna subarctica)
Walker (1908)
Hawkers (Aeshnidae)
BOHA
24802
Højmose-mosaikguldsmed (dk)
Gungflymosaikslända (se)
Synonyms: Subarctic Hawker (gb)
Measurements:
To 70-76mm
Ab 47-57mm
Hw 39-48mm
Flight period:
| J | F | M | A | M | J | J | A | S | O | N | D | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| EU | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Identification:
Life stages:
Distribution:
Northern Europe from Belgium to Poland and north. Rarer in Norway and northern part of the Scandinavian peninsula. Also the Alps and localized Romania and Bulgaria. Also Japan and temperate and arctic N America. In Denmark localized throughout Jylland and local i NE Sjælland.
Habitat:
Behavior:
Status:
NT in Denmark. NT Europe. LC globally.In Denmark under pressure from habitat deterioration, and only found at few suited locations. In Sweden and Finland more common and stable.
Comment:
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1094
(1 photos)
2022-08-20 Grib Skov (nordsjælland), Denmark Imago ♂ Sandskredssøen. It looks like I managed to photograph three different animals this day, of this new species for me. Unfortunately none of the photos are very good but at least sufficient to claim the species. Many of the necessary characters to see to identify it correctly are not visible on this photo, but at least the three minor spots on the side of the thorax, between the two yellow patches, is a strong indication of this species, over, especially, Moorland Hawker [Siv-mosaikguldsmed]. |
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1095
(1 photos)
2022-08-20 Grib Skov (nordsjælland), Denmark Imago ♂ Sandskredssøen. Some might say that it is not possible to make an id from this poor photo, but still I decide to do so, arguing that the three small spots are better suited for this species than for Moorland Hawker. Also, it looks like the marking on S3 is broad toward the top, where Moorland shows narrow wedges only. |
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1096
(2 photos)
2022-08-20 Grib Skov (nordsjælland), Denmark Imago ♂ Sandskredssøen. Thorax pattern supporting the species, of this number three animal today. It's a good example of the southern form of the Nordic animals which show the spots in between the large yellow ovals on the side of the thorax more like a third band. |
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2288
(3 photos)
2023-08-27 Grib Skov (nordsjælland), Denmark Imago ♂ Sandskredsøen. One present today. An animal like this showing three well-defined spots between the two ovals on the side of the thorax ideally should be of the northern form of the species, elisabethae, whereas the form, interlineata, which is supposed to be the one seen in Denmark (according to Ole Fogh Nielsen - De Danske Guldsmede) shows these spots flowing together looking more like a third band. Billqvist (Nordens Trollsländor 2.edi) shows an animal presented as elisabethae that looks much like this animal, why I will have to conclude that either the two forms are both present in Denmark, or they are not as well-defined as these authors suggest. Perhaps you're speculating whether this animal could in fact be a juncea [Siv-Mosaikguldsmed] rather than a subarctica, based on the isolated thorax spots and what looks like a yellow spot on the back of the head. I did so myself, but I'm pretty sure that the amount of bluish-pale markings running up along the side where the abdomen is most narrow, S3, only can be seen on a subarctica. The overall dark presentation also supports this. |
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2362
(6 photos)
2023-09-16 Grib Skov (nordsjælland), Denmark Imago ♂ Sandskredsøen. Form elisabethae? A single present at the same spot at the NV-corner where I always have them. Different from 2288, but see that entry for more comments about subspecies affiliation. Distal part of the abdomen entangled in old web material. Apparently the birch tree perch is a favored spot for the species. Last year I was struggling to get decent photos of the species, only being able to see it in flight, when suddenly it came in and landed at the exact same spot on this tree. Unfortunately, at that moment, I was sitting on the opposite side of the tree and from there I could only see the tips of the wings sticking out, and well-knowing that I could impossibly move myself to the other side of the tree without the animal flying away, all I decided was to stay put and expressing a loud and clear ....! |