Fred Siskind:
DDF1782 Fine-Lined Emerald, Somatochlora filosa, Occoquan Bay NWR 092717 levels darken stem 700
Fred Siskind:
DDF1780 Fine-Lined Emerald, Somatochlora filosa, Occoquan Bay NWR 092717 700
Fred Siskind:
DBU147 Red-banded hairstreak, Occoquan Bay NWR 092717 light dark bright 700
Fred Siskind:
DBU147a Red-banded hairstreak, Occoquan Bay NWR 092717 levels light shadows light tail area contrast 700
Fred Siskind:
DBU292 Monarch on thistle, Occoquan Bay NWR 092717 700
Fred Siskind:
DBU292a Monarch on thistle, Occoquan Bay NWR 092717 700
Fred Siskind:
DCP532 Unknown Caterpillar, Occoquan Bay NWR 092717 700
Fred Siskind:
DCP531 Unknown caterpillar and Vespinae wasp, Occoquan Bay NWR 092717 700
Fred Siskind:
DBU1791 Swarthy skipper, Occoquan Bay NWR 092717 700
Fred Siskind:
DSP20 Nursery Web spider, Occoquan Bay NWR 092717 light shadows bright 700