What’s that strange looking brown insect with a big head?
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Is it a wasp or a fly? This is Sicus ferrugineus, a member of the Canopidae, a sub family of the large order of insects known as Diptera or True Flies. Insects within this group are often referred to as … Read More

Robber fly: Dysmachus trigonus
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Dysmachus trigonus is one of 27 species in the British list of the Asilidae family of Robber Flies. This one was spotted almost by accident when it jumped on the moth Opsibotys fuscalis I was about to photograph last weekend … Read More

What’s that fly with long dangly legs?
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At this time of year, for a couple of weeks, there are lots of large, black flies flying around with their legs dangling down. On the coast here in Cornwall they’re everywhere, getting blown into the long grasses and paired … Read More

What’s that bee with a long nose hovering at that flower?
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It’s amost certainly a Bee Fly that have been on the wing since the middle of March. The fine early spring weather saw lots of Bee Fly out early feeding at wild flowers such as Primrose (Primula vulgaris). New identification … Read More

Yellow Dung Fly: life on a cow pat
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Golden yellow flies covering cow pats are a familiar sight but it’s rare, understandably, that anyone gets down to take a close look. These Yellow Dung Fly are quite spectacular beasts. Insight into Yellow Dung Fly (Scathophaga stercoraria): common throughout … Read More

St Mark’s Fly at Treen in West Cornwall
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This male (above left) was sitting in the sun on a frond of Hart’s-tongue (Asplenium scolopendrium). We were actually watching a Woodchat Shrike (Lanius senator) hunting up and down a hedge near Treen in West Cornwall but since he posed … Read More

Sawfly: Tenthredo marginella – caterpillar
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Latin name: Tenthredo marginella Family: Sawflies (Tenthredinidae) This photo: Marsland valley, Cornwall and Devon county boundary

Sawfly: Craesus septentrionalis – caterpillar
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Latin name: Craesus septentrionalis Family: Sawflies (Tenthredinidae) This photo: Marsland valley, Cornwall and Devon county boundary

Figwort Sawfly (Tenthredo scrophulariae) – larva
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Common name: Figwort Sawfly Latin name: Tenthredo scrophulariae Family: Sawflies (Tenthredinidae) This photo: Marsland valley, Cornwall and Devon county boundary

Figwort Sawfly (Tenthredo scrophulariae)
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Common name: Figwort Sawfly Latin name: Tenthredo scrophulariae Family: Common Sawflies (Tenthredinidae) Flies: May to August This photo Date: 25 July Location: garden, Marsland valley, North Cornwall and Devon county boundary

Fly: Tachina grossa
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Latin name: Tachina grossa Family: Tachinidae Flies: July to August Date: 30 June Location: Duckpool, Cornwall

Sawfly: Abia sericea – female
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Common name: A clubhorned sawfly Latin name: Abia sericea Family: Sawflies (Symphyta >> Tenthredinoidea) Flies: May to October Date: 14 June Location: garden, Marsland valley, Cornwall

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