Fallceon thermophilos and unidentified Fallceon species

[Mark Melton]

Both Fallceon thermophilos and the unidentified species were collected in the Russian River. Both were found in fast water with a gravel substrate. They range in size from 5-6 mm for mature nymphs.


Fallceon thermophilos male


Fallceon thermophilos male


Fallceon thermophilos female


Fallceon thermophilos


Fallceon quilleri and Fallceon thermophilos


Fallceon thermophilos and unidentified Fallceon sp.


Unidentified Fallceon sp.


Unidentified Fallceon sp.


Unidentified Fallceon sp.

 

[MillCreekMinnow]

I am a simple man. Are they kind of like Yellow Sally nymphs? Or more mayflyish?

 

[Mark Melton]

I am a simple man. Are they kind of like Yellow Sally nymphs? Or more mayflyish?

They're mayfly (Baetidae) nymphs. The common name is Blue Winged Olives.

 

[notaspeyguy]

Dang Mark, are a pro entemologist or amateur enthusiast? I'm not a pro speller or amateur enthusiast...

 

[Mark Melton]

Dang Mark, are a pro entemologist or amateur enthusiast? I'm not a pro speller or amateur enthusiast...

Just an enthusiastic amateur.