Ultrastructure of the thoracic dorso-medial field (TDM) in the elytra-to-body arresting mechanism in Tenebrionid Beetles (Coleoptera: Tenebrionidae)

Journal of Morphology
Stanislav N Gorb

Abstract

Beetles with flying ability lock their elytra (forewings) to the thorax or/and abdomen using complex locking devices. These structures are often supplemented with microtrichia fields of the inner surface of the elytra and adjacent parts of the pterothorax. The present study provides information about the ultrastructure of microtrichia of the dorso-medial fields of the thorax (TDM) in tenebrionid beetles (Tribolium castaneum, Zophobas rugipes). Epidermal cells located under the TDM field contain large electron-lucent vesicles connected to rough endoplasmic reticulum. Microtrichia and underlying cuticle of the TDM have a high density of pore channels, which are responsible for transport of an epidermal secretion onto the TDM surface. In order to show the presence of the secretion on the cuticle surface, TDM fields of air-dried specimens were compared with those in specimens after two treatments, such as (1) dehydration in ethanol and acetone, and (2) dental-wax-cast technique applied to living beetles. This revealed the presence of the nonvolatile film on the intact microtrichial surface. Possible functions of this film are suggested to be (1) the increase of adhesive forces in the contact area and (2) providing soft coupling and...Continue Reading

References

Jan 1, 1969·Journal of Ultrastructure Research·A R Spurr
Jan 1, 1969·Tissue & Cell·A C NevilleB Zelazny
Nov 1, 1996·Journal of Morphology·Stanislav N Gorb
Oct 1, 1997·Journal of Morphology·Stanislav N Gorb
Dec 1, 1997·Journal of Morphology·Stanislav N Gorb

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Citations

Jul 2, 2003·Journal of Morphology·Stanislav N Gorb, P J Perez Goodwyn
Oct 8, 2005·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·S N Gorb, V L Popov
Jan 13, 2009·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·R A BerthéS N Gorb
Jan 15, 2008·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Stanislav N Gorb
Dec 14, 2012·Proceedings. Biological Sciences·Roman Rakitov, Stanislav N Gorb
Dec 24, 2014·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Alexander E FilippovStanislav N Gorb
Sep 26, 2008·Science in China. Series C, Life Sciences·ZhenDong DaiJiuRong Sun

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