Pseudopupil

In the the eye of an invertebrate with a compound eye, the pseudopupil appears as a dark spot on the because ommatidia there are aligned to absorb light coming from the viewer's direction. The pseudopupil can seem to follow the viewer's eye in creatures such as mantises, dragonflies, and crabs. [ [http://www.britannica.com/EBchecked/topic/481361/pseudopupil] Encyclopædia Britannica Online]

Bibliography

* [http://www.biolbull.org/cgi/content/abstract/182/2/278] "Visual Rhythms in Stomatopod Crustaceans Observed in the Pseudopupil", T. W. Cronin, Department of Biological Sciences, University of Maryland, Baltimore County, Baltimore, Maryland 21228
* [http://starklab.slu.edu/seminar1.htm] "Microscopy of Drosophila's six rhodopsins"
* [http://jeb.biologists.org/cgi/reprint/199/7/1569.pdf] "Variations in the optical properties of the compound eyes of "Uca lactea annulipes", Jochen Zeil and Maha M. Al-Mutairi, Kuwait University, Faculty of Science, Department of Zoology
* [http://web.neurobio.arizona.edu/gronenberg/nrsc581/eyedesign/differencesnightdaymosquitoes.pdf] "Fundamental differences in the optical structure of the eyes of nocturnal and diurnal mosquitoes", M. F. Land á G. Gibson á J. Horwood á J. Zeil, J Comp Physiol A (1999) 185: 91±103

References