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> > Tiny Mayfly ID help please.

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QuagmireageMarch 28th, 2019, 10:46 am
Somerset, PA

Posts: 4
Hi folks.
I found this nymph in the Keystone Select section of Laurel Hill Creek, Somerset county PA. It's really small(20-24, maybe smaller). Sorry to be so vague. If anyone has an idea what it might be, I'd love to know.


Thanks!
MillcreekMarch 29th, 2019, 5:14 pm
Healdsburg, CA

Posts: 356
Clark - I'm pretty sure this is a member of the Baetidae family. As to the genus your guess is as good as mine. You'll need to dissect the mouth parts to figure out genus.
QuagmireageMarch 29th, 2019, 5:25 pm
Somerset, PA

Posts: 4
Thanks.
MillcreekMarch 29th, 2019, 5:42 pm
Healdsburg, CA

Posts: 356
The more I look at it the more it looks like it might be an early instar of Baetis tricaudatus. Google it and see what you think.
KonchuApril 3rd, 2019, 8:44 am
Site Editor
Indiana

Posts: 505
If the tails are banded, rather than a solid color, then this probably is either Baetis flavistriga or something close. The markings on the abdominal terga also remind me much more of flavistriga than tricaudatus.

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