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Stream Cruiser: A "life" dragonfly

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A stream cruiser, Didymops transversa, rests briefly, moored to a low plant. Note those lanky legs! I was exploring a prairie in Adams County yesterday, when we noticed two moderately sized dragonflies patrolling low over the plants. No bells were ringing in terms of absolute identity, but it didn't take long before one landed not too far off.

Fortunately, I had my 70-200mm lens on the camera, coupled to a 25mm extension tube. I use that setup a fair bit for plants, but it's also great for dragonflies. I was able to crawl on in, get prostrate, and shoot the cool insect at its level.

Stream cruiser! A new one for me, and in a completely unexpected bit of serendipity. While this species often patrols low over the waters of small streams - there was a creek not far off - they'll also hunt over nearby meadows, as we observed.

Stream cruiser distribution map, courtesy the Ohio Dragonfly Survey/Jim Lemon

This dragonfly has a patchy distribution in southern and eastern Ohio, with post-1990 records in 17 counties. The five counties marked with white diamonds represent new county records recorded during the Ohio Dragonfly Survey (2017-19).

Technically, it wasn't a "lifer", as I've seen a few patrolling streams, but those were relatively unsatisfying fly-bys that didn't really allow me the chance to study them. This one offered a great view, and good opportunities to observe their flight style and hunting tactics.


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