accessory pigment cells
(ARTHROPODA: Insecta)
As many as twenty-four cells that surround the retinulae of a compound eye; in superposition eyes the pigment granules assume different positions in light and darkness; also known as secondary pigment cells, secondary iris cells, iris pigment cells and outer pigment cells.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • retinal pigment cells — (ARTHROPODA: Insecta) Pigment cells in the retinal region of the eye; see accessory pigment cells, corneal pigment cells, retinular pigment cells …   Dictionary of invertebrate zoology

  • outer pigment cells — see accessory pigment cells …   Dictionary of invertebrate zoology

  • secondary pigment cells — see accessory pigment cells …   Dictionary of invertebrate zoology

  • corneal pigment cells — (ARTHROPODA) The two corneal cells that envelop each crystalline cone of a compound eye; in the developing eye, distal to the cone they secrete the corneal lense; also called primary pigment cells, corneagenous pigment cells and primary iris… …   Dictionary of invertebrate zoology

  • Pigment (biology) — In biology, a pigment or biochromeFact|date=June 2008 is any material resulting in color of plant or animal cells, which is the result of selective color absorption. Many biological structures, such as skin, eyes, fur and hair contain pigments… …   Wikipedia

  • basal pigment cell — (ARTHROPODA: Insecta) When present, a second sleeve of pigment cells that surrounds the proximal end of the retinulae; see corneal pigment cells, accessory pigment cells …   Dictionary of invertebrate zoology

  • secondary iris cells — see accessory pigment cells …   Dictionary of invertebrate zoology

  • Biological pigment — The Blue Morpho butterfly, native to Central America, derives its distinctive blue coloring from iridescence rather than from pigmentation. Biological pigments, also known simply as pigments or biochromes[1] are substances produced by living… …   Wikipedia

  • eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

  • fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …   Universalium

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