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Empis opaca
Length: Male 6 to 9.5 mm, Female 6.8 to 10 mm. This group of flies, sometimes called Dance flies, are predators of other insects, often tackling large prey, using their long, dagger-like snout. This species is distinguished from the very similar Empis livida by having four dark stripes on the thorax - a central short pair and longer outer stripes. Like Empis livida, the legs are mainly red/orange.
Along hedgerows where it takes other insects and nectars on flowers.
April and May.
Males of E. opaca and E. tessellata present a 'gift' to the female, in the form of a dead insect, before mating takes place. Females will not mate with males who do not present a gift.
Fairly common and widespread in England and Wales, fewer records from Scotland.
Fairly common in Leicestershire and Rutland
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015
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Species profile
- Species group:
- Flies
- Kingdom:
- Animalia
- Order:
- Diptera
- Family:
- Empididae
- Records on NatureSpot:
- 21
- First record:
- 07/07/2005 (Nicholls, David)
- Last record:
- 15/05/2023 (Nicholls, David)
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% of records within its species group
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