By August it was very evident that there had been an almost total collapse in the local butterfly populations although in other parts of Norway they seemed to be enjoying good numbers of some rare and local species. At the same time insect numbers also plummeted making local insect and butterfly sorties rather mundane. To compensate this, time was spent registering the local dragonfly populations which seemed to be doing a little better although numbers were well down compared to 2019. The images here show some the dragonfly species seen as well as several insects found during these field days.
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Vagrant Hawker (septemberlibelle) Aeshna mixta, male - Borrevannet, Horten 27th August 2020
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Yellow-winged Darter (gulvinghøstlibelle) Sympetrum flaveolum, male - Gjennestad, Sandefjord 29th August 2020
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Moustached Darter (sørhøstlibelle) Sympetrum vulgatum, male - Borrevannet, Horten 12th August 2020
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Ruddy Darter (blodhøstlibelle) Sympetrum sanguineum, male - Borrevannet, Horten 14th August 2020
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Black Darter (svarthøstlibelle) Sympetrum danae, newly hatched male - Borrevannet, Horten 12th August 2020
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Black Darter (svarthøstlibelle) Sympetrum danae, mating pair - Borrevannet, Horten 12th August 2020
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Brown Hawker (brunlibelle) Aeshna gradis, female egg laying - Borrevannet, Horten 12th August 2020
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Common Spreadwing (nordmetallvannnymfe) Lestes sponsa, male - Gjenestad, Vestfold 29th August 2020
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| Cinnamon Bug (rødrandtege) Corizus hyoscyami - Borrevannet, Horten 14th August 2020 |
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Common Green Sheild Bug (grønnbreitege) Palomene prasina, nymph - Borrevannet, Horten 12th August 2020
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| Pellucid Fly (hvitbåndet humleblomsterflue) Volucelle pellucens - Borrevannet, Horten 11th August 2020 |
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Noon Fly Mesembrina meridiana - Borrevannet, Horten 14th August 2020
A not so often registered fly in Norway with just over 200 observations and with this being the 4th for Vestfold and 2nd for Borrevannet. |
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Phasia hemiptera male 'First observation from Horten' - Skoppum, Horten 31st July 2020
The first Norwegian observation of this species was from Vestfold in 2006.
All of the ca. 70 recorded observations since, have been from southern Norway with 7 of these from Vestfold. |
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| Kite-tailed Robber Fly (svarthårrrovflue) Tolmerus atricapillus - Borrevannet, Horten 27th August 2020 |
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| Great Green Bush-cricket (grønn løvgresshoppe) Tettigonia viridissima - Snekkestad, Holmestrand 24th August 2020 |
