Sympetrum Vicinum - Ecology

Ecology

The naiads live in the debris of the bottoms of lakes and ponds. They do not actively pursue prey but wait for it to pass by, a strategy which affords them protection from other predators. The naiads emerge, or make the transition to adult dragonflies, at night. Adults fly from early August through October. This species flies later in the fall than any other species in the Northwest, with observations as late as October 29 in Idaho, and into November in Washington. The adults of this species hunt flying insects from perches on rocks or bare branches. The Latin name for this genus, Sympetrum, means "with rock" and refers to their habit of basking on rocks to absorb heat early in the day. This dragonfly is extremely abundant where it occurs, with large numbers of pairs flying and laying eggs in tandem.

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