devil's darning needle

1. Northeastern, Upper Northern, & Western U.S. See dragonfly. See Regional Note at dragonfly.
2. See damselfly.

The noun has 2 meanings:

Meaning #1: common climber of eastern North America that sprawls over other plants and bears numerous panicles of small creamy white flowers
  Synonyms: virgin's bower, old man's beard, Clematis virginiana

Meaning #2: slender-bodied non-stinging insect having iridescent wings that are outspread at rest; adults and nymphs feed on mosquitoes etc.
  Synonyms: dragonfly, darning needle, sewing needle, snake feeder, snake doctor, mosquito hawk, skeeter hawk