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ID#:9958
Description:At a magnification of 130X, this scanning electron microscopic (SEM) image focused on the head region of an adult “figeater” beetle, Cotinis mutabilis. In this particular view, the transitional area between one of the insect’s two compound eyes, i.e., right eye, and the vertex of its head is visualized. For even greater magnifications of the surface of the eye, see PHIL 9950, 9951, and 9952.
The compound eye is given this name due to the fact that the single large eye is really made up of many repeating units known as "ommatidia”. Each ommatidium is composed of separate units made up of a photoreceptor cell, support cell, and pigment cells. Though each of these visual mechanisms functions as a separate organ, together they provide the organism with a "compound” picture of its environment. Due to what is referred to as the "flicker effect”, the compound eye is made very sensitive to movement, with each ommatidium turning on and off, as objects pass across its field of view. The bilateral anatomical placement of the insect's eyes provides the organism with a very wide range of visual sensitivity.
High Resolution: Click here for hi-resolution image (5.48 MB)
Content Providers(s):CDC
Creation Date:2007
Photo Credit:Janice Haney Carr
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.

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