Onychogomphus lefebvrii
A black and yellow dragonfly with a body length of 50-55 mm and a hindwing length of 30-35 mm, its widely-spaced green eyes are diagnostic. This dragonfly lives in wide, stony streams and rivers. This endemic species flies March through September, spending much of its time perched on rocks and plants.
Attribution: Dûrzan cîrano (Wikipedia Creative Commons)
male
Attribution: Luc Verhelst (Wikimedia Creative Commons)
Attribution: Charles J Sharp (Wikimedia Creative Commons)
Attribution: Frank Vassen (Wikimedia Creative Commons)
Attribution: Chiswick Chap (Wikimedia Creative Commons)
female
Attribution: Hectonichus (Wikimedia Creative Commons)