Monday, April 1, 2013

Fluorescence of insect eyes


These are macro shot of the head of a sphecid wasp (Spheciformes). The photos are made in normal visible light, shortwave ultraviolet (253 nm) and long-wave (365 nm) UV light. Under long wave UV light the eyes shows a green fluorescence while in short wave UV some hairs have a weak fluorescence. 



In visible light:



In long wave UV light:



In visible light:
 



In long wave UV light (color intensity digitally increased):



In visible light:



In short wave UV light:



Some literature:

William D. Wiesenborn: UV-Excited Fluorescence on Riparian Insects except HymenopteraIs Associated with Nitrogen Content. - Psyche, Volume 2011 (2011), Article ID 875250, 6 pages doi:10.1155/2011/875250.

Robert E. Kay: Fluorescent materials in insect eyes andtheir possible relationship to ultra-violet sensitivity. - Journal of Insect Physiology, Volume 15, Issue 11, November 1969, Pages 2021–2028.

Jeffrey P. Abels and Richard D. Ludescher: Native Fluorescence from Juvenile Stages of Common FoodStorage Insects. - J. Agric. Food Chem., 2003, 51 (3), pages 544–549.



 

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