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bat fly

noun
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Definition of bat fly

: any of numerous small flies constituting the families Streblidae and Nycteribiidae, being ectoparasitic on bats, and having larvae completely developed in the body of the mother

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“Bat fly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bat%20fly. Accessed 3 Jun. 2020.

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