Twelve-spotted skimmer explained

The twelve-spotted skimmer (Libellula pulchella) is a common North American skimmer dragonfly, found in southern Canada and in all 48 of the contiguous U.S. states.

It is a large species, at 50mm long. Each wing has three brown spots. In adult males, additional white spots form between the brown ones and at the bases of the hindwings; it is sometimes called the ten-spot skimmer for the number of these white spots.

References

• Book: Dunkle, Sidney W. . 2000 . Dragonflies through Binoculars . New York . Oxford University Press . 0-19-511268-7 . 173–174.
• Book: Needham, James G. . Minter J. Westfall Jr.. Michael L. May . Dragonflies of North America (rev. ed.) . Scientific Publishers . 2000 . Gainesville, FL . 0-945417-94-2 . 719–720 .
• Book: Mead, Kurt . Dragonflies of the North Woods . Duluth, MN . Kollath+Stensaas Publishing . 2009 . Second . 978-0-9792006-5-6 . 134–135 .