Horse flies
are large flies with prominent compound eyes. In females, the eyes are widely separated but in males they are almost touching. The females bite large animals to obtain blood. Almost all are inactive at night.
6 species

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Atylotus rusticus Linnaeus, 1767 ♂
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Atylotus rusticus Linnaeus, 1767 ♂
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Atylotus rusticus Linnaeus, 1767 ♂
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Chrysops relictus Meigen, 1820 ♀
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Chrysops relictus Meigen, 1820 ♀
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Chrysops relictus Meigen, 1820 ♀
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Haematopota crassicornis Wahlberg, 1848 ♀
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Haematopota crassicornis Wahlberg, 1848 ♀
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Haematopota crassicornis Wahlberg, 1848 ♀
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Haematopota crassicornis Wahlberg, 1848 ♂
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Haematopota crassicornis Wahlberg, 1848 ♂
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Haematopota crassicornis Wahlberg, 1848 ♂
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Tabanus bovinus Linnaeus, 1758 ♂
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Tabanus bromius Linnaeus, 1758 ♀
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Philipomyia graeca Fabricius, 1794 ♀
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Philipomyia graeca Fabricius, 1794 ♀
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Philipomyia graeca Fabricius, 1794 ♀