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For Insects, Spiders & Their Kin
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Photo#52953
fat spiny Mayfly larva - Baetisca laurentina

fat spiny Mayfly larva - Baetisca laurentina
Harvard, Worcester County, Massachusetts, USA
May 19, 2006
Size: 4.2mm

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fat spiny Mayfly larva - Baetisca laurentina fat spiny Mayfly larva - Baetisca laurentina

Baetisca laurentina
I think just small individuals of B. laurentina. Upon careful analysis, they don't look like B. obesa.

Baetiscidae: Baetisca obesa maybe
If you could catch a couple for me, I would like to nail the name down. Another species is possible, but I've never seen it. Was it from a stream or pond?

 
Nashua River
I'll look for these Sunday too.