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Fig. 4 | Frontiers in Zoology

Fig. 4

From: When SEM becomes a deceptive tool of analysis: the unexpected discovery of epidermal glands with stalked ducts on the ultimate legs of geophilomorph centipedes

Fig. 4

Morphological features used to distinguish epidermal glands with stalked ducts from trichoid sensilla as depicted from SEM. a Gland stalk in female H. subterraneus with colored round socket and large terminal pore. The socket exhibits one or two cuticular folds (compare left top and right bottom) that merge with the shaft cuticle. The shaft is irregularly notched. b Tip of female tarsus 2 with several trichoid sensilla. The socket is always composed of two scutes: a larger polygonal scute distally (darker blue) and a sickle-shaped scute proximally (lighter blue). The shaft bears ribs, which are strictly proximally and slightly bent distally to form a steep spiral, a small terminal pore is present (not visible in this image)

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Frontiers in Zoology

ISSN: 1742-9994