Mayfly - Siphloplecton basale

Thanks Don

My other photos are from the same area of the Androscoggin River.

… tom murray, 9 April, 2009 - 7:00pm

Siphloplecton basale

Haven't you taken this from Dummer before? They do get to a bit on the whopper side of mayflies.

… Donald S. Chandler, 9 April, 2009 - 6:55pm

Moved

Moved from Siphlonurus.

… tom murray, 9 April, 2009 - 4:09pm

Moved

Moved from Mayflies.

… tom murray, 9 April, 2009 - 2:49pm

Baetidae I think

Probably Callibaetis

… Tim Loh, 9 April, 2009 - 1:35am

These were large

Do Baetidae get this big?

… tom murray, 9 April, 2009 - 6:42am

Probably Siphlonurus

This is an immature specimen. It is too large to be Baetidae, and the antennae (though hard to see) are short.

… Lloyd Gonzales, 9 April, 2009 - 2:43pm

Correction (?)

Perhaps you can see this better than I can, Tom, but the ventral shot appears to show a bifid claw on the foreleg. If so, this is probably Metretopodidae (Siphloplecton?). The other claws also seem a bit long for Siphlonurus.

… Lloyd Gonzales, 9 April, 2009 - 3:17pm

Cleftfoot

I added another photo that shows the front leg, and it's indeed cleft.

… tom murray, 9 April, 2009 - 4:10pm

Thanks, Tom!

Were you able to confirm this feature on your other specimen?

… Lloyd Gonzales, 9 April, 2009 - 4:15pm

Yes

I could see the cleft foot on the other one with the red stripe down it's back.

… tom murray, 9 April, 2009 - 4:19pm