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Photo#1169127
Recently emerged Grappletail 1 - Octogomphus specularis - male

Recently emerged Grappletail 1 - Octogomphus specularis - Male
Butano State Park, San Mateo County, California, USA
May 17, 2015
See remarks under 1st image of series.

I'm curious about the two small, yellow, bulging-hemisphical appendages behind the hind-wing bases...looking kind of like "dragonfly halteres"!...except I guess they're attached to the 1st abdominal segment rather than the thorax. I've never noticed such structures on an odonate before...they can also be seen on the other male that was found nearby at the same time:

 

Images of this individual: tag all
Recently emerged Grappletail 1 - Octogomphus specularis - male Recently emerged Grappletail 1 - Octogomphus specularis - male Recently emerged Grappletail 1 - Octogomphus specularis - male Recently emerged Grappletail 1 - Octogomphus specularis - male Recently emerged Grappletail 1 - Octogomphus specularis - male Recently emerged Grappletail 1 - Octogomphus specularis - male Recently emerged Grappletail 1 - Octogomphus specularis - male