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Figure 3 | Frontiers in Zoology

Figure 3

From: The embryoid development of Strigamia maritimaand its bearing on post-embryonic segmentation of geophilomorph centipedes

Figure 3

Peripatoid. A, B, C, E: Lateral view; live specimens immersed in mineral oil. D: unfixed preparation mounted on a slide and viewed at the compound microscope with Nomarski optics. A: specimen with its 4 manually removed exuviae (the embryonic cuticle, ec, and the three proembryoid exuviae, e1-3) originally attached to the rear end of the animal; B: the peripatoid tends to keep a coiled position with the head in proximity of the posterior end of the animal; all limb buds are more or less developed up to the last one (arrowhead); C: high magnification of head (h) and anterior trunk showing elongation of the antennae (a) and development of second maxillae (mx2) and maxillipeds (mxp); note that in this specimen the apolysis of the next moult has already taken place in some anterior regions, as shown by the detachment of the cuticle from the tip of the maxillipeds. D: high magnification of mid-trunk limbs showing clear signs of segmentation of the cuticle, although the identification of single podomeres is not possible; E: high magnification of the terminal part of the trunk, showing the initial development of the last limb buds (arrowhead) and a clear delineation of a genital segment (gs). Scale bars: A, C: 500 μm; B, E: 200 μm; D: 100 μm.

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