Sunday, June 8, 2014

Four-spotted Skimmer

Another dragonfly I encountered during my expeditions to the Carleton College arboretum is this Four-spotted Skimmer. Males and females are often not distinguishable in the field (at least by humans). See my previous post on this species. Paulson writes that the males of this species are highly territorial, but tolerate “satellite” individuals.  These individuals are non-mating, subordinate males.

Four -spotted Skimmers are found across much of North America, all the way to Alaska. They are also found across the Old World, from Great Britain to Japan. Four-spotted Chasers, as they are known in England, are migratory in Europe, but such behavior is unrecorded in the New World.

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