Two types of scales on the upper wing surfaces. The scales in the second shot are strongly iridescent with blue/purple colors, but only with light from a certain angle, otherwise they appear a dull grayish-brown.
Nikon MM-11 microscope, Olympus 50/0.50 LMPlanFL N , Olympus TLU tube lens, 50X on sensor, Canon T3i
Nikon MM-11 microscope, Olympus 50/0.50 LMPlanFL N , Olympus TLU tube lens, 50X on sensor, Canon T3i
Marpesia marcella wing scales
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Charlie
Excellent comparison, those are some chubby looking scales.
Linden
Excellent comparison, those are some chubby looking scales.
Linden
Linden Gledhill http://www.flickr.com/photos/13084997@N03/