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| Kingdom Animalia |
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Hydraena georgiadesi Orchymont, 1931 -- valid |
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Hydraena graphica Orchymont, 1931 -- valid |
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Hydraena ludovicae Orchymont, 1931 -- valid |
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Hydraena macedonica Orchymont, 1931 -- valid |
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Hydraena phassilyi Orchymont, 1931 -- valid |
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Hydraena rigua Orchymont, 1931 -- valid |
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Hydraena scabrosa Orchymont, 1931 -- valid |
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Hydraena simonidea Orchymont, 1931 -- valid |
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Hydraena vedrasi Orchymont, 1931 -- valid |
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