Journal
JOURNAL OF MORPHOLOGY
Volume 270, Issue 12, Pages 1524-1530Publisher
WILEY
DOI: 10.1002/jmor.10779
Keywords
lamina; medulla; short and long visual fibers; lateral visual system; accessory eyes; Arthropoda
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Stemmata or larval eyes are of crucial importance for the understanding of the evolution and ontogeny of the hexapod's main visual organs, the compound eyes. Using classical neuroanatomical techniques, I showed that the persisting stemmata of Chaoborus imagos are connected to persisting stemma neuropils neighboring the first and second order neuropils of the compound eyes, and therefore also the imago possesses a stemma lamina and medulla closely associated with the architecture and the developmental pattern of those of the compound eyes. The findings are compared with other arthropods, e.g. accessory lateral eyes in Amandibulata and Myriapoda, suggesting some ancestral rather than derived character states. J. Morphol. 270: 1524-1530, 2009. (C) 2009 Wiley-Liss, Inc.
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