Bog Hawker Aeshna subarctica
Difficult to identify, very similar to Moorland Hawker in size, colour and jizz. One should be careful to identify the two, and base the final identification on more than only one identification mark. A good photo or a netted individual will make identification 100% certain.
Combination of following marks reliable:
- Both: The spots on 3rd abdominal segment are larger and more spread out than in juncea.
- Two large yellowish spots under the thorax (small in juncea)
- Male: Combination of all, plus: There are three small spots between the thorax side stripes, the front side stripe being almost uniform in width, with a small notch on the front edge. Together, these two marks should nail an identification. Difficult individuals do occur.
- Female: Combination of most marks and anal appendages round-tipped. Sometimes only one spot between thorax stripes (cf. juncea)
More unreliable or uncertain (as of yet) marks include:
- Usually no spots behind eyes (aberrant junceas occur frequently)
- The seam in the frons is usually uniformly thick, cf. juncea
- usually a near-complete base ring in abdominal segments S3 and S4
See pictures for more reference.
Common in bogs and peatmoss lakes. Often occurs with both Moorland and Siberian Hawker. Found throughout entire country.
Flight period June-August.
Male. Petro Pynnönen