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. 2022 Sep 1;13(9):799. doi: 10.3390/insects13090799

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Microscopic photograph of the ultra-section of the flexible socket and termination of the tubular body of trichoideum sensillum in N. rugosus, longitudinal section by part of the pedicel: (a,b) trichoideum sensillum visible from the cuticular side; (c,d) further longitudinal section, with the shape of the socket and membrane visible in the deeper layer of the cuticle; (e,f) inner side of the socket and lymph cavity (lm) and part of the dendrite of the mechanoreceptor; (g,h) dendritic way (Ds) and tubular body terminated at the base of the trichoideum sensillum; (i) magnification of the other trichoid sensilla and the base of the sensillum in the socket. Cl, cuticular layer; f, flexible socket (fs) in trichoideum sensillum (TSa); el, epidermal layer; mb, socket membrane; ss, socket septum.