Using serial block-face scanning electron microscopy, we report on the internal 3D structures of the brown planthopper, (Hemiptera: Delphacidae) at nanometer resolution for the first time. Within the reconstructed organs and tissues, we found many novel and fascinating internal structures in the planthopper such as naturally occurring three four-way rings connecting adjacent spiracles to facilitate efficient gas exchange, and fungal endosymbionts in a single huge insect cell occupying 22% of the abdomen volume to enable the insect to live on plant sap. To understand the muscle and stylet movement during phloem sap-sucking, the cephalic skeleton and muscles were reconstructed in feeding nymphs. The results revealed an unexpected contraction of the protractors of the stylets and suggested a novel feeding model for the phloem sap-sucking.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8016479 | PMC |
| http://dx.doi.org/10.7554/eLife.62875 | DOI Listing |
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