Asked • 04/12/19

Do mosquitos excrete blood?

Since insects like mosquitos ingest only blood, and insects generally excrete their solid and liquid waste [at the same time](https://www.youtube.com/watch?v=6a8psEYgopw) as [frass](https://en.wikipedia.org/wiki/Frass), I was wondering: **is mosquito defecation more like iron pellets or droplets of blood?** I've never seen a mosquito defecate, so I have no evidence. Do they defecate during flight? If so, are tiny little droplets of digested-blood falling from the sky?

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