acone eye
(ARTHROPODA: Insecta)
A condition (possibly primitive) of a compound eye in which the ommatidium is lacking a crystalline cone, but is modified in the form of elongated transparent bodies called Semper cells; see pseudocone, eucone, exocone.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • crystalline cone — (ARTHROPODA: Insecta) The hard, clear intracellular structure of the eucone eye, produced by Semper cells beneath the cornea and bordered laterally by the primary pigment cells; also known as vitreous body or crystalline body; see acone eye,… …   Dictionary of invertebrate zoology

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