Tags
British beetles, Oedemera, Oedemera (Oncomera) femoralis, Oedemera femoralis, Swollen-thighed beetle, Thick-legged beetle, Thick-legged flower beetle

From the kingdom of Animalia, the phylum of Arthropoda, the class Insecta, the order Coleoptera, the family Oedemeridae and the genus Oedemera, may I present my first beetle sighting of 2017 – and a new beetle for me to boot – a stunning example of the species Oedemera (Oncomera) femoralis. There are only 4 species of Oedemera in Britain (here’s another) and only 1 – this one – in the subgenera Oncomera. In layman’s words, she is one of the thick-legged (some people say swollen-thighed) flower beetles and I know it’s a female precisely because she does not have those swollen thighs.
I was lucky to find her as her species is nocturnal, feeding at night on the pollen and nectar of ivy and willow. During the day, they lurk under twigs and branches, which is how I found her, by picking up twigs and branches looking at lichen and searching for slime moulds. These insects grow to between 13 and 20mm long, and can be found in the more southerly counties of England and Wales, though they are not often recorded – there are just 278 recorded sightings in the NBN database (see map above), of which 65 are in Wales. I count myself amongst those fortunate to have seen such a beautiful little creature!

If you’re an insect geek (and I do not use that word disparagingly), you can see the full details of this species on the website of the Watford Coleoptera Group.
Well done, Annie. Keep turning those twigs and branches. I must say your identification skills amaze me. I have so many images of insects, beetles, moths etc. that I am unable to identify. They all get lost in archive folders as I give up after so long.
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Thanks, Joyce. I don’t yet have ID books for everything but, luckily, there are some really good websites and I’m also a member of several specific groups (insects, hoverflies, snails, fungi, and birds, which you know about) on Facebook and the folks in those are really helpful. I did manage to work this one out myself due to its likeness to the Swollen-thighed beetle though. 🙂
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What a capture, Annie! Beautifully done, and one I have not yet come across.
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Thanks so much, Pete. I was delighted to meet this little one and it posed so well for piccies. 🙂
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