File:Nopoiulus kochii gonopod development 02.jpg

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English: In the juliform millipede Nopoiulus kochii (Gervais, 1847) (Blaniulidae), the eighth and the ninth pair of trunk appendages are typical legs since their first appearance in the III post-embryonic instar and so remain in the IV instar (A), and only turn into short, scale-like appendages with the moult to the V instar (B). With a further moult, the millipede, now in its VI post-embryonic instar, becomes an adult with two pairs of bulky, complex gonopods (C). (A-C) External morphology. SEM, scale bar 300 μm. Arrow pairs point to the eighth and ninth pair of trunk appendages, as walking legs (A) or scale-like appendages (B).
Date
Source Drago, L., Fusco, G., & Minelli, A. (2008). Non-systemic metamorphosis in male millipede appendages: long delayed, reversible effect of an early localized positional marker. Frontiers in Zoology 5(5). doi:10.1186/1742-9994-5-5
Author Leandro Drago, Giuseppe Fusco and Alessandro Minelli (Department of Biology, University of Padova, Via Ugo Bassi 58/B, I-35131 Padova, Italy)
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8 April 2008

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