Skimmers are Great With Four Spots or Eight

Wolf Read

Vancouver, Canada

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Artist's Description

A Four-spotted Skimmer (Libellula quadrimaculata_) shares a cattail leaf with an Eight-spotted Skimmer (_Libellula forensis), offering a nice opportunity to compare the two species. Though their names are quite similar, the two dragonflies have many strong differences in coloration. The two dragonflies differ in size noticeably, and the Four-spot has a much more subdued earth-tone coloration. A very striking difference is that the Four-spotted Skimmer has tiny dark spots on the nodus of each wing (about mid-wing on the leading edge), whereas the Eight-spotted has very large dark blotches among patches of light blue/white. Note that the darkened rectangles near the tips of each wing, called stigmas on the fore-wings and pterostimas on the hind, in both species are not counted as spots; essentially all dragonflies have these.

Canon Rebel T1i (500D)
Canon EF 300mm 1:4 L IS USM
Canon EF 1.4x II Extender
420mm, 1/500 sec, f / 11, -1/3 EV, ISO 400
Hand-held

Botanical Gardens, University of British Columbia
Vancouver, BC
23 Jul 2010

Artwork Comments

  • Jodie Cooper
  • Wolf Read
  • Chuck Gardner
  • Wolf Read
  • Kristina K
  • Wolf Read
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desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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