Mystery Creature

Ardmore, PA

About the size of a grain of rice, found it swimming in my hot tub here in SE Pennsylvania last week. Is it a larva or worm?

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Minot, ND

It's a larva of a fly, but I am uncertain as to a precise i.d. - it resembles one of a muscid fly in the genus Fannia (see for an example), but it may well be something else...

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