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Aprionus
Genus, Insect - true fly (Diptera), Terrestrial
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Apsectrotanypus
Genus, Insect - true fly (Diptera), Freshwater, terrestrial
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Apteromyia
Genus, Insect - true fly (Diptera), Terrestrial
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Archicollinella
Genus, Insect - true fly (Diptera), Terrestrial
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Arctoconopa
Genus, Insect - true fly (Diptera), Freshwater, terrestrial
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Arctopelopia
Genus, Insect - true fly (Diptera), Freshwater, terrestrial
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Arganthomyza
Genus, Insect - true fly (Diptera), Terrestrial
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Argyra
Genus, Insect - true fly (Diptera), Freshwater, terrestrial
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Arnoldiola
Genus, Insect - true fly (Diptera), Terrestrial
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Arthrocnodax
Genus, Insect - true fly (Diptera), Terrestrial
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Asilus
Genus, Insect - true fly (Diptera), Terrestrial
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Asindulum
Genus, Insect - true fly (Diptera), Terrestrial
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Asphondylia
Genus, Insect - true fly (Diptera), Terrestrial
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Aspistes
Genus, Insect - true fly (Diptera), Terrestrial
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Asteia
Genus, Insect - true fly (Diptera), Terrestrial
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Astiosoma
Genus, Insect - true fly (Diptera), Terrestrial
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Asynapta
Genus, Insect - true fly (Diptera), Terrestrial
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Atelestus
Genus, Insect - true fly (Diptera), Terrestrial
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Atherigona
Genus, Insect - true fly (Diptera), Terrestrial
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Atherix
Genus, Insect - true fly (Diptera), Freshwater, terrestrial