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Daily changes in the compound eye of a beetle (Macrogyrus)

Horridge, George Adrian; Marcelja, L..; Jahnke, R.; McIntyre, P.


(i) Graded index lenses in the cornea and the crystalline cone form the optical system in each ommatidium. (ii) By night the crystalline cone has a blunt ellipsoidal proximal end which contributes to the formation of a superposition image across the clear zone. By day the cone is a tapering point that is extended as a light guide through a dense layer of pigment. (iii) The action of extending the cone and moving the pigment towards the clear zone from between the cones occurs as the...[Show more]

CollectionsANU Research Publications
Date published: 1983-02-22
Type: Journal article
Source: Proceedings of the Royal Society B: Biological Sciences
DOI: 10.1098/rspb.1983.0010


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