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June 7, 2010 — Polk County

McKenzie Creek at Cty W bridge --- I was hoping for O. smithi but didn't find any.

Ashy Clubtail (Phanogomphus lividus)
Photographed
7+ indiv
Photo of Ashy Clubtail
 
Photo of Ashy Clubtail
 
Black-shouldered Spinyleg (Dromogomphus spinosus)
Observed
1 indiv
Mustached Clubtail (Hylogomphus adelphus)
Photographed
1 indiv
Photo of Mustached Clubtail
 
American Emerald (Cordulia shurtleffii)
Observed
1 indiv
Common Baskettail (Epitheca cynosura)
Observed
many indiv
Prince Baskettail (Epitheca princeps)
Observed
6+ indiv
Racket-tailed Emerald (Dorocordulia libera)
Observed
1 indiv
Chalk-fronted Corporal (Ladona julia)
Observed
a few indiv
Four-spotted Skimmer (Libellula quadrimaculata)
Observed
several
River Jewelwing (Calopteryx aequabilis)
Observed
quite a few