Structure and Ultrastructure of the Acrotrichis grandicollis (Coleoptera: Ptiliidae) Compound Eyes and the Eye Features Related to Miniaturisation

Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
Anastasia A Makarova, Alexey A Polilov

Abstract

Here is the first description of the visual organ of Acrotrichis grandicollis, a member of Ptiliidae family that includes the smallest free-living insects. The apposition eyes of A. grandicollis have the acone-type crystalline cone; a fused rhabdom is formed by eight retinula cells and surrounded by primary pigment cells. Secondary pigment cells are located only in the distal part of the ommatidium under the lens. The eye consists of about 50 facets about 12 μm in diameter. The A. grandicollis ommatidium ultrastructure has been compared with that of large Coleoptera. The results obtained enabled us to emphasize the compound eye specific features associated with the small body size.

References

Jan 15, 1979·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·G A HorridgeM Wilson
Jan 1, 1970·Zeitschrift für Zellforschung und mikroskopische Anatomie·A Perrelet
Apr 1, 1993·Progress in Neurobiology·E J Warrant, P D McIntyre
Jun 23, 2004·Vision Research·Victor Benno Meyer-Rochow, József Gál
Dec 3, 2014·Arthropod Structure & Development·Anastasia MakarovaStefan Fischer

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