| 1. | The Boreidae ( snow scorpionflies ) are the sister clade to the Siphonaptera.
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| 2. | The last common ancestor of modern Siphonaptera separated from the Mecoptera during the early Cretaceous.
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| 3. | The chigoe flea is properly classified as a member of the order Siphonaptera as it is a flea.
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| 4. | DNA evidence indicates that the fleas, traditionally a separate order ( Siphonaptera ), are instead highly specialized scorpionflies.
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| 5. | Diptera has been grouped with Siphonaptera and Mecoptera in the Antliophora, but this has not been confirmed by molecular studies.
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| 6. | The Siphonaptera are most closely related to the snow scorpionflies ( Boreidae ), placing them within the endopterygote insect order Mecoptera.
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| 7. | Flea phylogeny was long neglected, the discovery of chigoe flea or jigger, is sister to the rest of the Siphonaptera.
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| 8. | American marten host several internal and external parasites, including helminths, fleas ( Siphonaptera ), and ticks ( Ixodida ).
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| 9. | Informations of the species of the orders Thysanoptera, Neuroptera, Mecoptera, and Siphonaptera are very few and more studies are required.
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| 10. | "Fleas, " the textbook states, " are highly specialized parasitic insects belonging to the order Siphonaptera ."
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