superposition eye

superposition eye
In nocturnal or crepuscular arthropods, an eye that permits the passage of light through the non-pigmented wall of one ommatidium to the iris of a neighboring one; an adaptation to protect sensitive photoreceptors from overstimulation during the day; clear-zone eye; see apposition eye.

Online Dictionary of Invertebrate Zoology. . 2005.

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Look at other dictionaries:

  • superposition eye — noun : an insect eye in which all light rays except those entering the central facet of a group of facets are intercepted compare apposition eye …   Useful english dictionary

  • Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye …   Wikipedia

  • Holochroal eye — Holochroal eyes are compound eyes with a many (sometimes over 15,000) tiny lenses (30 100μm, rarely larger).Citation | last1 = Clarkson | first1 = E. N. K. | year=1979 | title =The Visual System of Trilobites.| journal =Palaeontology |volume= 22… …   Wikipedia

  • apposition eye — (ARTHROPODA) The compound eye of diurnal insects and crustaceans in which the rhabdom reaches the crystalline cone, it absorbs oblique rays of light in the pigmented walls of the ommatidium and, produces a mosaic image; see superposition eye …   Dictionary of invertebrate zoology

  • apposition eye — noun : a compound eye that is characteristic of diurnal insects and in which entering light reaches the retina of each ommatidium as a single spot and the image is a composite of all the spots compare superposition eye …   Useful english dictionary

  • clear-zone eye — see superposition eye …   Dictionary of invertebrate zoology

  • photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …   Universalium

  • insect — insectival /in sek tuy veuhl/, adj. /in sekt/, n. 1. any animal of the class Insecta, comprising small, air breathing arthropods having the body divided into three parts (head, thorax, and abdomen), and having three pairs of legs and usually two… …   Universalium

  • Cloeon dipterum — Adult female Naiad (larva) …   Wikipedia

  • scotopic — see superposition eye …   Dictionary of invertebrate zoology

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