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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Dragonfly Family Gomphidae

Where & when

In 151 records from GBIF, adults of this family have mostly been collected during June (21%), August (21%), July (20%), September (18%), May (13%), and October (5%).

In 9 records from GBIF, this family has been collected at elevations ranging from 262 to 2723 ft, with an average (median) of 869 ft.

Family Range

Specimens of the Dragonfly Family Gomphidae

6 Nymphs

1 Video of Gomphidae Dragonflies:

Dragonfly Nymph Scooting Around

Dragonfly nymphs propel themselves through the water with a miniature jet engine, taking water in below their mouths and shooting it out their back ends. You can see the ripples from the jet out this one's back in this video.

Start a Discussion of Gomphidae

Dragonfly Family Gomphidae

Genus in Gomphidae
Genus in Gomphidae: Hagenius
Family Range
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